Solve the system of equations by substituion,
-5x + y = 3
7.5x - 1.5y = 3

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

Cal's go cart has a gas tank with the dimensions shown below. he uses a gas can that holds 11 gallon of gas, to fill the go cart tank. 11 gallon = 231 inches^3 how many full gas cans will it take to fill the go cart's gas tank?

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square