Simone is in a bike-a-thon for a fundraiser. She receives $15 in pledges for every mile she bikes. If she wants to raise $510, how many miles does she need to bike?
A total of 1,056 students from different schools enter the county science fair. Each school enters exactly 32 students. How many schools participate in the science fair?
Christy buys 48 barrettes. She shares the barrettes equally between herself and her 3 sisters. Which expression represents the number of barrettes each girl gets?