Earl earns a salary of $150 plus 20% of the amount of his sales for the week. last week he earned $230. this equation can be used to find s, the amount of his sales in dollars last week. 230=150+0.2s

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.