fixed errors in code

Author: Praise88

Sprint-1/1-key-exercises/3-paths.js

@@ -17,7 +17,7 @@ console.log(`The base part of ${filePath} is ${base}`);
 // Create a variable to store the dir part of the filePath variable
 // Create a variable to store the ext part of the variable
 
-const dir = filePath.slice(0, 49);
+const dir = filePath.slice(0, lastSlashIndex);
 const ext = filePath.slice(-4);
 
 console.log(`The directory of the file path is ${dir} and the extension is ${ext}`)

Sprint-1/2-mandatory-errors/2.js

@@ -1,7 +1,8 @@
 // Currently trying to print the string "I was born in Bolton" but it isn't working...
 // what's the error ?
 
-console.log(`I was born in ${cityOfBirth}`);
 const cityOfBirth = "Bolton";
+console.log(`I was born in ${cityOfBirth}`);
+
 
-It is not working because the const was declared after the console.log
+//It is not working because the const was declared after the console.log

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

@@ -12,17 +12,17 @@ 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
-line 4 and 5
+line 4, 5 and 10
 
 // 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, I think it is because there is no comma after the first quotation marks. I can fix 
 it by adding the comma between the two quotation marks.
 
 // c) Identify all the lines that are variable reassignment statements
-line 7 and 8
+line 4 and 5
 
 // d) Identify all the lines that are variable declarations
-line 1 and 2
+line 1, 2, 7 and 8
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
-It is removing the commas from the String, making the number easier to read
+It removes commas from the string and then converts the cleaned-up string into an actual number, so we can do math with it.