Last year I had 37 students in my Pre-Algebra classes. This year I have 22. What is the percent decease in the amount of students I have this year?

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.