III. Find what is required in each problem with the formula and step

1). If $75,000 is invested at 8% compounded quarterly,

a. find the compound amount;

b. Compound interest at the end of 4 1/2 years.

2). Find the amount due at the end of 10 years and 9 months if $42,000 is invested at 9% compounded monthly.

3). Find the present value of $60,000, due at the end of 4 years, if money is worth 10%, compounded semiannually.