Please help me solve this problem!

Find the present value of $4,200 under each of the following rates and periods: (Round Intermedlate calculations to 6 dedimal places, eg. 2.512512 and round final answer to 2 decimal places, e.g. 2,515.25.) a. 9.0 percent compounded monthly for five years. Present value $ b. 6.6 percent compounded quarterly for eight years. Present value $ c. 4.38 percent compounded daily for four years. Present value $ d. 5.7 percent compounded continuously for three years. Present value $