Fix BMI return type and remove global variable

Author: mahmoudshaabo1984

Sprint-2/2-mandatory-debug/2.js

@@ -4,9 +4,6 @@
 // ===========> Write your prediction here
 // Prediction: The output will incorrectly say the last digit is "3" for all numbers, because the function uses the global variable 'num' (103) instead of accepting a parameter.
 
-// We don't need this global variable, so I commented it out:
-// const num = 103;
-
 // We added 'num' as a parameter inside the parentheses
 function getLastDigit(num) {
   return num.toString().slice(-1);

Sprint-2/3-mandatory-implement/1-bmi.js

@@ -12,8 +12,8 @@ function calculateBMI(weight, height) {
   // 2. Divide weight by height squared (الوزن تقسيم الطول المربع)
   const bmi = weight / heightSquared;
 
-  // 3. Return the result to 1 decimal place (إرجاع النتيجة بخانة عشرية واحدة)
-  return bmi.toFixed(1);
+  // 3. Return the result to 1 decimal place as a NUMBER (إرجاع النتيجة بخانة عشرية واحدة كرقم)
+  return Number(bmi.toFixed(1));
 }
 
 // === Let's test the function to see if it works! ===