17. The hourly temperature at Portland, Oregon, on a particular day is recorded below. LAM. 46 3. 8. 6. 10 11 12 Noon 44 43 41 40 40 41 43 46" 52" 1 PM. 74 75 75 77 75° 65° 69° 21 3. 8. 74 70 62" 55" 4 10 11 12 Midnight 48 72 51 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?

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