I need help with number 3 please

What is the inverse of the function f(x)=2x+1

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.

Finding tbe values of the variables in each kite