i just answer 1 -key -exercise using multiple line comment . i also created a branch coursework/sprint-1.

Author: Dagim-Daniel

Sprint-1/1-key-exercises/1-count.js

@@ -4,3 +4,13 @@ count = count + 1;
 
 // Line 1 is a variable declaration, creating the count variable with an initial value of 0
 // Describe what line 3 is doing, in particular focus on what = is doing
+/*Line 3 is updating the value of the variable `count`. 
+The `=` operator is an assignment operator, 
+which means it takes the value on the right side 
+(in this case, `count + 1`) 
+and assigns it to the variable on the left side (`count`). 
+So, it takes the current value of `count`, adds 1 to it, 
+and then stores that new value back into `count`. 
+in general, Line 3 is incrementing the value of `count` by 1.
+*/
+