Is subtraction of a whole number commutative? if not, give a counterexample.

4+6x-3x^3 in standard form with explanations because i don’t understand

If you answer 2+2 you will get over 80 points

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)