Uke many college students, Ally applied for and got a credit card that has an annual percentoge rate (APR) of 12%. The fint thing she did was buy a new stereo system for $400. At the end of the month, her credit cond statement said she only needed to make a minimum monthly payment of $15. Assume Ally makes her payment when she sees her statement at the end of each month. If Ally doesn't charge anything else and only makes the minimum monthly payments, approximately how many months would it take her to completely pay off the stereo system? Assume that the credit card company compounds interest at the end of each month. 35.8 months 50.0 months 29.3 months 31.2 monthis 46.3 months Aly now realizes she needs to pay more than just the minimum payment (unless she wants to be paying for this stereo system until she graduates). She deddes to pay twice the minimum monthly payment ( $30 per month), instead. How much quicker wal she pay off the stereo system? 19.5 months 11.6 months 29.5 months 26.4 months 16.8 months If, instesd, Ally wants to have the stereo system paid for by the end of the year, what minimum monthly payment must she make? $32.09 $31.59 $35.54 $26,65