Which of the following is NOT a perfect square trinomial? Group of answer choices

^2+20−100
4^2−20+25
^2+18+81
16^2−24+9^2

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.