How much water can be held by a cylindrical tank with a radius of 12 feet and height of 30 feet?

What are linear equations? could'ya explain too me, ? ! and how do you see what graph is a proportional relationship?

Michael gose to a theme park and rides two different roller coasters that both begin on a raised platform his height while on the first roller coaster measured in feet from the platform height can be modeled by the following graph where t is the number of seconds since the ride began

Write a problem for the equation 0.5n=12.5. then solve the equation and write the answer to your problem.