The point R is halfway between the integers on the number line below and represents the number _. (Use the hyphen for negative numbers and write the answer as a decimal, such as -6.4).

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