5. The approximate height, h, in metres, travelled by golf balls hit with two different clubs over a horizontal distance of d metres is given by the following functions: seven-iron: h(d) = - 0. 002d' + 0.3d nine-iron: h(d) = - 0.004d + 0.5d a) At what distances is the ball at the same height when hit by either club? (2 marks) b) What is this height? (2 marks)