Fix syntax error in priceAfterOneYear assignment

Fixed syntax error in priceAfterOneYear assignment and updated comments.

Author: djebsoft

Sprint-1/3-mandatory-interpret/1-percentage-change.js

@@ -2,7 +2,7 @@ let carPrice = "10,000";
 let priceAfterOneYear = "8,543";
 
 carPrice = Number(carPrice.replaceAll(",", ""));
-priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
+priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
 
 const priceDifference = carPrice - priceAfterOneYear;
 const percentageChange = (priceDifference / carPrice) * 100;
@@ -12,11 +12,24 @@ console.log(`The percentage change is ${percentageChange}`);
 // Read the code and then answer the questions below
 
 // a) How many function calls are there in this file? Write down all the lines where a function call is made
+// there are five function calls in this file, the lines where a call function is made are as follows:
+// line 4, replaceAll()
+// line 4, Number()
+// line 5, replaceAll()
+// line 5, Number()
+// line 10, console.log()
 
 // b) Run the code and identify the line where the error is coming from - why is this error occurring? How can you fix this problem?
+// the error is coming from line 5
+// it is a syntax error, the expression priceAfterOneYear.replaceAll("," "") ismissing a comma
+// to fix this problem we add comma between the two arguments
 
 // c) Identify all the lines that are variable reassignment statements
+// the lines that are variable reassignment statements: -line 4 -line 5
 
 // d) Identify all the lines that are variable declarations
+// the lines that are variable declarations: -line 1 -line 2 -line 7 -line 8
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+// the expression calls the replace method to replace the comma with empty string
+// converting the new string to a number to be able to perform math operations