Grade 12 Calculus, derivatives. Show your work.

Question 2 (6 points) The following two functions represent the value of two stocks. G(t) represents the value of GeniusMath stock in dollars and W(t) represents the value of Wowzza stock in dollars, both as a function of time elapsed, t, measured in hours. G(t) = +3 + kt2 + 40t - 27 W(t) =t(3+2 - 24t + 64) a) Determine the value of k given that the value of both stocks are changing at the same rate when 3 hours have elapsed. (4 marks) b) When 3 hours have elapsed, is the value of Wowzza stock increasing or decreasing? At what rate is it increasing/decreasing? Justify your answer and include units. (2 marks)