Compute the present value of a $100 investment made 6 months, 7 years, and 15 years from now at 6 percent interest. (Remember the exponent for the 6 month calculation is expressed as 0.5, representing one-half of one year.) Instructions: Enter your responses to the nearest penny ( 2 decimal places). Do not round intermediate calculations. Present value of investment made in 6 months at 6 percent =$ Present values of investment made in 7 years at 6 percent =$ Present value of investment made in 15 years at 6 percent =$