Charlie makes 30 circular coasters to sell at a craft fair. The diameter of each coaster is 4 inches. He paints one side of each coaster with special paint. Each jar of paint covers 150 in2. How many jars of paint will he need?

Gia opened two savings accounts at two different banks. one account earns an annual 3.4% simple interest, and the other earns half as much. if she deposited $500 in each account, how much total interest will she have earned in 5 years? a. $34.00 b. $25.50 c. $51.00 d. $510.00