Compute the effective interest rate on a $3-$year business loan for $$75,000$ arranged over the internet that requires equal monthly payments and has an APR of $15\%.$

Compute the monthly payment on a standard $6-$year car loan of $$45,011$dollars if the APR is $5\mathrm{.}99\%?$

Compute the monthly payment on a standard ten$-$year student loan of $$38,011$ dollars if the APR is $6\mathrm{.}53\%?$