13. $9 because 75%=3/4 and 1/4 of 12 is 3, and so you multiply $3 by 3 to get $9 14. Multiply 325 by .2 to get $65.00 15. 15 minutes, because if it rises 2 feet every hour, then it rises 1 foot every hour, and so you divide that by 2 to get 15 Answers: 13. $9 14. $65.00 15. 15 mins