Use the formula for the future value of an ordinary annuity to calculate A with the monthly payment R=$150, the annual interest rate r=7.5%, and the number of monthly payments n=132
FV = P x {[1 + R]^N - 1 / R}
FV = 150 x {[1 + 0.075/12]^132 - 1 / 0.075/12}
FV = 150 x 204.1647526..
FV =$30,624.71
