Create a real life scenario for 1.075(5.25x-5.25(0.25)(x-3)

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie