Fixes and clarifications to sprint 1 exercises

Sprint-1/errors/3.js

@@ -3,5 +3,7 @@ const last4Digits = cardNumber.slice(-4);
 
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working
-// Make and explain a prediction about why the code won't work
+// Before running the code, make and explain a prediction about why the code won't work
+// Then run the code and see what error it gives.
+// Consider: Why does it give this error? Is this what I predicted? If not, what's different?
 // Then try updating the expression last4Digits is assigned to, in order to get the correct value

Sprint-1/exercises/decimal.js

@@ -1,4 +1,4 @@
-const num = 58.4567;
+const num = 56.4567;
 
 // You should look up Math functions for this exercise https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math
 

Sprint-1/exercises/initials.js

@@ -2,5 +2,5 @@ let firstName = "Creola";
 let middleName = "Katherine";
 let lastName = "Johnson";
 
-// Declare a variable called initials that stores the first 3 characters of each string in upper case
-// Log the variable in each case
+// Declare a variable called initials that stores the first character of each string.
+// This should produce the string "CKJ", but you must not write the characters C, K, or J in the code of your solution.

Sprint-1/exercises/random.js

@@ -6,4 +6,4 @@ const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 // In this exercise, you will need to work out what num represents?
 // Try breaking down the expression and using documentation to explain what it means
 // It will help to think about the order in which expressions are evaluated
-// Try logging the value of num several times to build an idea of what the program is doing
+// Try logging the value of num and running the program several times to build an idea of what the program is doing

Sprint-1/interpret/time-format.js

@@ -6,9 +6,7 @@ const totalMinutes = (movieLength - remainingSeconds) / 60;
 const remainingMinutes = totalMinutes % 60;
 const totalHours = (totalMinutes - remainingMinutes) / 60;
 
-const remainingHours = totalHours % 24;
-
-const result = `${remainingHours}:${remainingMinutes}:${remainingSeconds}`;
+const result = `${totalHours}:${remainingMinutes}:${remainingSeconds}`;
 console.log(result);
 
 // For the piece of code above, read the code and then answer the following questions