$11.$ Given the same information in #$10,$ what is the total amount of interest that Mr$.$ Webster will earn on his investment assuming he meets his retirement goals$/$

$12.$ A car loan is offered with monthly payments and $10$ percent APR. What is the loan's effective annual rate $($EAR$)?$

$13.$ Mr$.$ Roberts wants to buy a car for $$35,000.$ The bank will provide terms of $5$ years at $6\%.$ Mr$.$ Roberts can afford a payment of up to $$625$ per month. Based on these terms, can Mr$.$ Roberts afford to make the payments? Explain your answer.

$14.$ Given the same information in #$13,$ it$$s now $1$ year later. For purposes of question #$14$ only, assume that Mr$.$ Roberts was able to purchase the car. He is now considering selling his new vehicle after making the payments for $1$ year $(12$ months$).$ What is the selling price Mr$.$ Roberts will need to get for his vehicle in order to pay off the principle?

$15.$ Susan realizes that she has charged too much on her credit card and has racked up $$22,000$

in debt. If Susan can pay $$500$ each month and the card charges $23$ percent APR $($compounded monthly$),$ how long will it take her to pay off the debt?

$16.$ Given the same information in #$15$ and that Susan makes the $$500$ payment each month until the debt is paid off. How much interest will Susan pay?