Add 10 to the product

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)

Combine like terms to make a simpler expression 3z+z