questions below. Make sure to show your work and justify all your answers. 17. The hourly temperature at Portland, Oregon, on a particular day is recorded below. 1 A.M. 2 3 4 5 6 46 7 440 8 9 10 11 12 Noon 430 410 40 40 410 430 1 P.M. 46 520 650 690 2 3 4 5 6 720 7 8 9 10 11 12 Midnight 740 750 750 770 750 740 70 620 55 510 48 a. Find the amplitude of a sinusoidal function that models this temperature variation. b. Find the vertical shift of a sinusoidal function that models this temperature variation. c. What is the period of a sinusoidal function that models this temperature variation? d. Use t = 0 at 5 P.M. to write a sinusoidal function that models this temp. variation. e. What is the model's temperature at 10 A.M.? Compare this to the actual value