25 feet in 4 seconds; 80 feet in x seconds write a proportion for each phrase and solve it

Acylinder has volume 45π and radius 3. what is it’s height?

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.

How do i i solve this equation? -18 = x/3 + 3