______ is a problem-solving technique that involves guesses at a solution.

The postcondition of a function

a. determines how the function will complete its job. b. tells what must be true before the function executes. c. declares the function for the compiler. d. tells what will be true after the function executes.

In the formula =(G15-G14)*$M$3/4, which mathematical operation is performed first?

A. $M$3/4 B. (G15-G14)*$M$3 C. (G15-G14) D. (G15-G14)/4