17. The following function describes the motion of an arrow shot upwards. The height h in meters after time t in seconds h(t) = 6tZ + 35t + 3 a) Find the maximum height reached by the arrow (5 marks) b) What is the impact velocity of the arrow when it hits the ground? (3 marks) Application (12 marks) 16. The cost function for producing x units of a product is C(x) = -0.002x2 + 5.6x + 2800. The revenue function is R(x) = 140x - 0.18x2 Determine the marginal profit for the sale of 150 units of the product. (4 marks)