If money is invested for 3 years with interest compounded annually, the future value of the investment varies directly as the cube of 1 plus r (1+r), where r is the annual interest rate. If the fut...
a) Future value varies inversely with the cube of 1 plus r,
b) Future value varies linearly with 1 plus r,
c) Future value varies directly with the square of 1 plus r,
d) Future value varies directly with the cube of 1 plus r