Find the difference when 6h is subtracted from 2h-4

What properties allow transformation to be used as a problem solving tool

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

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?