Interest rates or discount rates. Fill in the interest rates for the following table, $8,$ using one of the three methods below:

a$.$ Use the interest rate formula, $r=(\frac{FV}{PV}{)}^{\frac{1}{n}}-1.$

b$.$ Use the TVM keys from a calculator.

c$.$ Use the TVM function in a spreadsheet.

$\backslash$table$[[$Present Value,Ruture Value,Number of Periods,Interest Rate$],[$$$478\mathrm{.}75,$$$1,974\mathrm{.}47,16,\%($Round to two decimal places.$)]]$

Data table

$($Click on the following icon in order to copy its contents into a spreadsheet.$)$

$\backslash$table$[[$Present Value,Future Value,Number of Periods,Interest Rate$],[$$$478\mathrm{.}75,$$$1,974\mathrm{.}47,16,?$