Necesito ayuda con esto add using partial sums

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)

The anwser cause i do not understand just plez

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?