Select ALL the correct answers. Which of the given functions are linear?
y = 0.8x3
y = 7x − 2
y = x2 − 8
y = x
y = 10 + x
y = 16 + x2

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?