Kellen bought a souvenir cup at the zoo for $7.50. Any time Kellen brings
the
cup back to the zoo, he can purchase fountain drinks for $0.75 each. If
Kellen has spent $12.75 so far, including the original purchase of the cup,
how many fountain drinks has he purchased?

Antoine stands on a balcony and throws a ball to his dog, who is at ground level. the ball's height (in meters above the ground), xx seconds after antoine threw it, is modeled by: h(x)=-2x^2+4x+16h(x)=−2x 2 +4x+16 what is the height of the ball at the time it is thrown?