Problem $4-21$ Present Value

a$.$

What is the present value of $$8,048$ invested in an account with an APR of $9\mathrm{.}9$ percent for $7$ years, compounded annually? $($Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$.$

What is the present value of $$8,048$ invested in an account with an APR of $9\mathrm{.}9$ percent for $7$ years $,$ compounded semiannually? $($Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

c$.$

What is the present value of $$8,048$ invested in an account with an APR of $9\mathrm{.}9$ percent for $7$ years, compounded monthly? $($Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

d$.$

What is the present value of $$8,048$ invested in an account with an APR of $9\mathrm{.}9$ percent, for $7$ years, compounded continuously? $($Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$