Update comments for clarity and detail in time format calculations

Author: Maryanne-K

Sprint-1/3-mandatory-interpret/2-time-format.js

@@ -12,14 +12,20 @@ console.log(result);
 // For the piece of code above, read the code and then answer the following questions
 
 // a) How many variable declarations are there in this program?
+//6 variable declarations. 
 
 // b) How many function calls are there?
+//1 function call, on line 10. 
 
 // c) Using documentation, explain what the expression movieLength % 60 represents
 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators
+//The remainder operator returns the remainder left over when movieLength is divided by 60. 
 
 // d) Interpret line 4, what does the expression assigned to totalMinutes mean?
+// The expression (movieLength - remainingSeconds) / 60 calculates the total number of whole minutes in the movie length. It first subtracts the remaining seconds from the total movie length to get a value that is a multiple of 60, and then divides that value by 60 to convert it from seconds to minutes. It gives it as a whole number and is easier to work with. 
 
 // e) What do you think the variable result represents? Can you think of a better name for this variable?
+// It represents the movie duration in the format of hours:minutes:seconds. A better name for this variable could be movieDuration. 
 
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
+// It does not work for negative values. The code assumes that movieLength is a positive integer representing the length of a movie in seconds. If movieLength is negative, the calculations for remainingSeconds, totalMinutes, remainingMinutes, and totalHours will not produce meaningful results, and the final result will not represent a valid time format.