Let's say that these functions represent the pay f(x) in hours, x. Function B would increase linearly on a greater scale because each X is being multiplied by 20.
You'll notice this trend for larger numbers, such as 10.
7sqrt = 49 since the base is a square. 49 x 2 = 98 - since there's 2 of those identical squares. 7 x 5 = 35 - area of the rectangular face. 35 x 4 = 140 - since there's 4 of those faces.
