What is the answer to 3x-5y=-35

Diana is painting statues she has 7/8 of a liter of paint each statue requires 1/20 of a liter of paint how many statues can she paint?

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

If y varies directly as x2 and y=6 when x=6, find the constant of variation.