Solve the question below, please

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

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.