Agolf ball is hit and its height is given by the equation h=29.4t - 4.9t^2, where t is the time elapsed, in seconds, and h is the height in metres.

(a) equation in function notation:
                           h(t) = 29.4t - 4.9t²
(b) The degree of the function is 2 and this is quadratic
(c) what time will the ball in its highest position?
                            h = 29.4t  - 4.9t²
     differentiate both sides and equate to zero
                             d(h) = 29.4 - 9.8t = 0   ; t = 3
 (d) what time will it hit the ground,
                          h = 29.4t - 4.9t² = 0;    t = 6 and t = 0
Thus, the answer is t = 6. 

8.4 10.4 8.9 10.9 have a good day