What expression is equivalent to the number 28 19/100

1foot = 12 inches; 1 yard = 3 feet

How do you determine if an ordered pair is a solution to a given equation?

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.