Simon recently received a credit card with an $18\%$ nominal interest rate. With the card, he purchased an Apple iPhone $11$ for $$650.$ The minimum payment on

the card is only $$20$ per month.

a$.$ If Simon makes the minimum monthly payment and makes no other charges, how many months will it be before he pays off the card? Do not round

intermediate calculations. Round your answer to the nearest whole number.

month$($s$)$

answer to the nearest whole number.

month$($s$)$

Round your answer to the nearest cent.

$