Cecily is on her roof and want to throw a ball straight up in the air and figure out how long it will take to reach the ground. The function that models an object falling to the ground is f(x)=-32x2+vx+d. In this function, x represents time, v represents the initial (vertical) velocity, and d represents the initial distance above the ground in feet. If v is positive, then the initial velocity is upward. If v is negative, the initial velocity is downward. [10 points] Write the function to model the height of the ball if Cecily releases the ball from 40 feet above the ground at a velocity of 64 feet per second. Then, graph the function noting the key points of the graph. Make sure to scale the axes appropriately.