Convert to standard form: 9x^2 = 16y^2 - 18x + 64y -71 = 0

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?

Anyone know? is appreciated! will mark brainliest if correct!

The graph of y = ax^2 + bx + c is a parabola that opens up and has a vertex at (0, 5). what is the solution set of the related equation 0 = ax%2 + bx + c?