Please help this homework is due at midnight

Question

The height yy (in feet) of a ball thrown by a child is

y=−112x2+6x+3y=-112x2+6x+3

where xx is the horizontal distance in feet from the point at which the ball is thrown.

(a) How high is the ball when it leaves the child's hand?    feet

(b) What is the maximum height of the ball?    feet

(c) How far from the child does the ball strike the ground?    feet

Submit QuestionQuestion 1

Answer 1

For a, you need to substitute x=0.

For c, you need to solve the equation when y=0.

The answer in b will be given by differentiating the expression for y and setting the derivative=0; then substitute the value of x into the original expression for y. If you haven't had calculus yet, the maximum point of a parabola Ax²+Bx+C occurs when x=-B/2A.

P.S. Your English grammar needs some help also.

Your question requires a semi-colon after the word "help" and a period at the end of the sentence.

You may think that attention to such details is unimportant. Let me assure you that it is!