Fix typo in replaceAll function call for priceAfterOneYear and update comments for clarity

Author: Monsur0001

Sprint-2/3-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 +12,35 @@ 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 function calls are made are:
+1. Line 4: carPrice.replaceAll(",", "")
+2. Line 5: priceAfterOneYear.replaceAll(",", "")
+3. Line 7: Number(carPrice.replaceAll(",", ""))
+4. Line 8: Number(priceAfterOneYear.replaceAll(",", ""))
+5. 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 occurring on line 5 because the "," character was ommited in the replaceAll function, to fix the problem,
+ we need to include the "," character in the replaceAll function like this: priceAfterOneYear.replaceAll(",", "")
+
 // c) Identify all the lines that are variable reassignment statements
 
+The lines that are variable reassignment statements are:
+1. Line 4: carPrice = Number(carPrice.replaceAll(",", ""));
+2. Line 5: priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
+
 // d) Identify all the lines that are variable declarations
+The lines that are variable declarations are:
+1. Line 1: let carPrice = "10,000";
+2. Line 2: let priceAfterOneYear = "8,543";
+3. Line 6: const priceDifference = carPrice - priceAfterOneYear;
+4. Line 7: const percentageChange = (priceDifference / carPrice) * 100;
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+The expression "Number(carPrice.replaceAll(",", ""))" is performing two main operations:
+1. "carPrice.replaceAll(",", "")": This part of the expression removes all commas from the string representation of
+"carPrice". For example, it converts "10,000" to "10000".
+2. "Number(priceAfterOneYear.replaceAll(",", ""));": This part converts the resulting string (after removing commas) 
+into a numeric value. The purpose of this expression is to convert the string representation of a number that 
+may contain commas into an actual numeric value that can be used for mathematical calculations.