Tomás earned $38.25 for cleaning the garage. He was paid $4.25 per hour. Write and solve an equation to find how many hours it took him to clean the garage

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.