diff --git a/seed/challenges/01-front-end-development-certification/advanced-bonfires.json b/seed/challenges/01-front-end-development-certification/advanced-bonfires.json
index 5fb09d2418..f997f84585 100644
--- a/seed/challenges/01-front-end-development-certification/advanced-bonfires.json
+++ b/seed/challenges/01-front-end-development-certification/advanced-bonfires.json
@@ -114,14 +114,14 @@
       "id": "aa2e6f85cab2ab736c9a9b24",
       "title": "Exact Change",
       "description": [
-        "Design a cash register drawer function that accepts purchase price as the first argument, payment as the second argument, and cash-in-drawer (cid) as the third argument.",
-        "cid is a 2d array listing available currency.",
-        "Return the string \"Insufficient Funds\" if cash-in-drawer is less than the change due. Return the string \"Closed\" if cash-in-drawer is equal to the change due.",
+        "Design a cash register drawer function <code>checkCashRegister()</code> that accepts purchase price as the first argument (<code>price</code>), payment as the second argument (<code>cash</code>), and cash-in-drawer (<code>cid</code>) as the third argument.",
+        "<code>cid</code> is a 2D array listing available currency.",
+        "Return the string <code>\"Insufficient Funds\"</code> if cash-in-drawer is less than the change due. Return the string <code>\"Closed\"</code> if cash-in-drawer is equal to the change due.",
         "Otherwise, return change in coin and bills, sorted in highest to lowest order.",
         "Remember to use <a href='//github.com/FreeCodeCamp/freecodecamp/wiki/How-to-get-help-when-you-get-stuck' target='_blank'>Read-Search-Ask</a> if you get stuck. Try to pair program. Write your own code."
       ],
       "challengeSeed": [
-        "function drawer(price, cash, cid) {",
+        "function checkCashRegister(price, cash, cid) {",
         "  var change;",
         "  // Here is your change, ma'am.",
         "  return change;",
@@ -138,17 +138,17 @@
         "// [\"TWENTY\", 60.00],",
         "// [\"ONE HUNDRED\", 100.00]]",
         "",
-        "drawer(19.50, 20.00, [[\"PENNY\", 1.01], [\"NICKEL\", 2.05], [\"DIME\", 3.10], [\"QUARTER\", 4.25], [\"ONE\", 90.00], [\"FIVE\", 55.00], [\"TEN\", 20.00], [\"TWENTY\", 60.00], [\"ONE HUNDRED\", 100.00]]);"
+        "checkCashRegister(19.50, 20.00, [[\"PENNY\", 1.01], [\"NICKEL\", 2.05], [\"DIME\", 3.10], [\"QUARTER\", 4.25], [\"ONE\", 90.00], [\"FIVE\", 55.00], [\"TEN\", 20.00], [\"TWENTY\", 60.00], [\"ONE HUNDRED\", 100.00]]);"
       ],
       "tests": [
-        "assert.isArray(drawer(19.50, 20.00, [[\"PENNY\", 1.01], [\"NICKEL\", 2.05], [\"DIME\", 3.10], [\"QUARTER\", 4.25], [\"ONE\", 90.00], [\"FIVE\", 55.00], [\"TEN\", 20.00], [\"TWENTY\", 60.00], [\"ONE HUNDRED\", 100.00]]), 'message: <code>drawer(19.50, 20.00, [[\"PENNY\", 1.01], [\"NICKEL\", 2.05], [\"DIME\", 3.10], [\"QUARTER\", 4.25], [\"ONE\", 90.00], [\"FIVE\", 55.00], [\"TEN\", 20.00], [\"TWENTY\", 60.00], [\"ONE HUNDRED\", 100.00]])</code> should return an array.');",
-        "assert.isString(drawer(19.50, 20.00, [[\"PENNY\", 0.01], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 0], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]]), 'message: <code>drawer(19.50, 20.00, [[\"PENNY\", 0.01], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 0], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]])</code> should return a string.');",
-        "assert.isString(drawer(19.50, 20.00, [[\"PENNY\", 0.50], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 0], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]]), 'message: <code>drawer(19.50, 20.00, [[\"PENNY\", 0.50], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 0], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]])</code> should return a string.');",
-        "assert.deepEqual(drawer(19.50, 20.00, [[\"PENNY\", 1.01], [\"NICKEL\", 2.05], [\"DIME\", 3.10], [\"QUARTER\", 4.25], [\"ONE\", 90.00], [\"FIVE\", 55.00], [\"TEN\", 20.00], [\"TWENTY\", 60.00], [\"ONE HUNDRED\", 100.00]]), [[\"QUARTER\", 0.50]], 'message: <code>drawer(19.50, 20.00, [[\"PENNY\", 1.01], [\"NICKEL\", 2.05], [\"DIME\", 3.10], [\"QUARTER\", 4.25], [\"ONE\", 90.00], [\"FIVE\", 55.00], [\"TEN\", 20.00], [\"TWENTY\", 60.00], [\"ONE HUNDRED\", 100.00]])</code> should return <code>[[\"QUARTER\", 0.50]]</code>.');",
-        "assert.deepEqual(drawer(3.26, 100.00, [[\"PENNY\", 1.01], [\"NICKEL\", 2.05], [\"DIME\", 3.10], [\"QUARTER\", 4.25], [\"ONE\", 90.00], [\"FIVE\", 55.00], [\"TEN\", 20.00], [\"TWENTY\", 60.00], [\"ONE HUNDRED\", 100.00]]), [[\"TWENTY\", 60.00], [\"TEN\", 20.00], [\"FIVE\", 15], [\"ONE\", 1], [\"QUARTER\", 0.50], [\"DIME\", 0.20], [\"PENNY\", 0.04]], 'message: <code>drawer(3.26, 100.00, [[\"PENNY\", 1.01], [\"NICKEL\", 2.05], [\"DIME\", 3.10], [\"QUARTER\", 4.25], [\"ONE\", 90.00], [\"FIVE\", 55.00], [\"TEN\", 20.00], [\"TWENTY\", 60.00], [\"ONE HUNDRED\", 100.00]])</code> should return <code>[[\"TWENTY\", 60.00], [\"TEN\", 20.00], [\"FIVE\", 15], [\"ONE\", 1], [\"QUARTER\", 0.50], [\"DIME\", 0.20], [\"PENNY\", 0.04]]</code>.');",
-        "assert.deepEqual(drawer(19.50, 20.00, [[\"PENNY\", 0.01], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 0], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]]), \"Insufficient Funds\", 'message: <code>drawer(19.50, 20.00, [[\"PENNY\", 0.01], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 0], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]])</code> should return \"Insufficient Funds\".');",
-        "assert.deepEqual(drawer(19.50, 20.00, [[\"PENNY\", 0.01], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 1.00], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]]), \"Insufficient Funds\", 'message: <code>drawer(19.50, 20.00, [[\"PENNY\", 0.01], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 1.00], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]])</code> should return \"Insufficient Funds\".');",
-        "assert.deepEqual(drawer(19.50, 20.00, [[\"PENNY\", 0.50], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 0], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]]), \"Closed\", 'message: <code>drawer(19.50, 20.00, [[\"PENNY\", 0.50], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 0], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]])</code> should return \"Closed\".');"
+        "assert.isArray(checkCashRegister(19.50, 20.00, [[\"PENNY\", 1.01], [\"NICKEL\", 2.05], [\"DIME\", 3.10], [\"QUARTER\", 4.25], [\"ONE\", 90.00], [\"FIVE\", 55.00], [\"TEN\", 20.00], [\"TWENTY\", 60.00], [\"ONE HUNDRED\", 100.00]]), 'message: <code>checkCashRegister(19.50, 20.00, [[\"PENNY\", 1.01], [\"NICKEL\", 2.05], [\"DIME\", 3.10], [\"QUARTER\", 4.25], [\"ONE\", 90.00], [\"FIVE\", 55.00], [\"TEN\", 20.00], [\"TWENTY\", 60.00], [\"ONE HUNDRED\", 100.00]])</code> should return an array.');",
+        "assert.isString(checkCashRegister(19.50, 20.00, [[\"PENNY\", 0.01], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 0], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]]), 'message: <code>checkCashRegister(19.50, 20.00, [[\"PENNY\", 0.01], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 0], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]])</code> should return a string.');",
+        "assert.isString(checkCashRegister(19.50, 20.00, [[\"PENNY\", 0.50], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 0], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]]), 'message: <code>checkCashRegister(19.50, 20.00, [[\"PENNY\", 0.50], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 0], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]])</code> should return a string.');",
+        "assert.deepEqual(checkCashRegister(19.50, 20.00, [[\"PENNY\", 1.01], [\"NICKEL\", 2.05], [\"DIME\", 3.10], [\"QUARTER\", 4.25], [\"ONE\", 90.00], [\"FIVE\", 55.00], [\"TEN\", 20.00], [\"TWENTY\", 60.00], [\"ONE HUNDRED\", 100.00]]), [[\"QUARTER\", 0.50]], 'message: <code>checkCashRegister(19.50, 20.00, [[\"PENNY\", 1.01], [\"NICKEL\", 2.05], [\"DIME\", 3.10], [\"QUARTER\", 4.25], [\"ONE\", 90.00], [\"FIVE\", 55.00], [\"TEN\", 20.00], [\"TWENTY\", 60.00], [\"ONE HUNDRED\", 100.00]])</code> should return <code>[[\"QUARTER\", 0.50]]</code>.');",
+        "assert.deepEqual(checkCashRegister(3.26, 100.00, [[\"PENNY\", 1.01], [\"NICKEL\", 2.05], [\"DIME\", 3.10], [\"QUARTER\", 4.25], [\"ONE\", 90.00], [\"FIVE\", 55.00], [\"TEN\", 20.00], [\"TWENTY\", 60.00], [\"ONE HUNDRED\", 100.00]]), [[\"TWENTY\", 60.00], [\"TEN\", 20.00], [\"FIVE\", 15], [\"ONE\", 1], [\"QUARTER\", 0.50], [\"DIME\", 0.20], [\"PENNY\", 0.04]], 'message: <code>checkCashRegister(3.26, 100.00, [[\"PENNY\", 1.01], [\"NICKEL\", 2.05], [\"DIME\", 3.10], [\"QUARTER\", 4.25], [\"ONE\", 90.00], [\"FIVE\", 55.00], [\"TEN\", 20.00], [\"TWENTY\", 60.00], [\"ONE HUNDRED\", 100.00]])</code> should return <code>[[\"TWENTY\", 60.00], [\"TEN\", 20.00], [\"FIVE\", 15], [\"ONE\", 1], [\"QUARTER\", 0.50], [\"DIME\", 0.20], [\"PENNY\", 0.04]]</code>.');",
+        "assert.deepEqual(checkCashRegister(19.50, 20.00, [[\"PENNY\", 0.01], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 0], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]]), \"Insufficient Funds\", 'message: <code>checkCashRegister(19.50, 20.00, [[\"PENNY\", 0.01], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 0], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]])</code> should return \"Insufficient Funds\".');",
+        "assert.deepEqual(checkCashRegister(19.50, 20.00, [[\"PENNY\", 0.01], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 1.00], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]]), \"Insufficient Funds\", 'message: <code>checkCashRegister(19.50, 20.00, [[\"PENNY\", 0.01], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 1.00], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]])</code> should return \"Insufficient Funds\".');",
+        "assert.deepEqual(checkCashRegister(19.50, 20.00, [[\"PENNY\", 0.50], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 0], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]]), \"Closed\", 'message: <code>checkCashRegister(19.50, 20.00, [[\"PENNY\", 0.50], [\"NICKEL\", 0], [\"DIME\", 0], [\"QUARTER\", 0], [\"ONE\", 0], [\"FIVE\", 0], [\"TEN\", 0], [\"TWENTY\", 0], [\"ONE HUNDRED\", 0]])</code> should return \"Closed\".');"
       ],
       "type": "bonfire",
       "MDNlinks": [