Present Value of an Annuity

$2.$ What is the present value of $$10,000$ cash flows occurring at the end of years one, two and three at an interest rate of $6$ percent?

$3.$ Amy Madigan can afford to make $$400$ payments on a car loan for the next $60$ months. If the interest rate on the loan is $0\mathrm{.}50$ percent p$.$m$.$ compounded monthly, what is the most expensive car Amy can afford?