3. You are unable to pay a loan amount of $4200 that is due today. If you are charged 6% pa(Simple interest) for this loan, what equivalent payment is required to repay this amount 8 months?

5. Your friend invested $81000 for two years at 4.5% compounded annually. Find the accumulated value of the investment at the end of three years. Also find the compound interest earned on this amount.

9. . Your company invested $80000 in an investment fund at 9.5% compounded quarterly for 3 years and 6 months

(a) Calculate the accumulated value of this amount for this period.

(b) Calculate the compound interest earned.