Last year, Erin earned $1,497.75. This year, she earned 2.9 times as much as last year. Which of the following answer choices is the most reasonable
estimate for the amount of money Erin earned this year?*

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.