(8 marks] Suppose $500 is invested at 4% compounded quarterly. (a) How long will it take the investment to accumulate to $750 if the exact method for accumulation is in effect? (b) How long will it take the investment to accumulate to $750 if the practical method for accumulation is in effect? Be sure to us linear interpolation! (c) What annual effective interest rate must $500 be invested at to accumulate to $750 in 10 years? (8 marks] Suppose $500 is invested at 4% compounded quarterly. (a) How long will it take the investment to accumulate to $750 if the exact method for accumulation is in effect? (b) How long will it take the investment to accumulate to $750 if the practical method for accumulation is in effect? Be sure to us linear interpolation! (c) What annual effective interest rate must $500 be invested at to accumulate to $750 in 10 years