One way to keep moisture out of your basement is to paint the walls with waterproof paint. The number g(of gallons)of paint you need varies directly with the area A of the basement. One gallon of paint covers 100 square feet.a)write a direct variation equation that relates g and A (solve for k first)b)how many gallons (g) do you need to cover 530 square feet?c)how many square feet (A) does 8.5 gallons of paint cover?