Tony invested $5,500 in a four-year cd that paid 4.8% interest, but later needed to withdraw $475 early. if the cd’s penalty for early withdrawal was three months’ worth of interest on the amount withdrawn, how much of a penalty did tony pay?

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.