If a term in an expanded binomial is -3x²y, what is the next term?

How do i do this activity, is appreciated

Evaluate the expression for the given value of the variable. 5×(h+3) for h=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)