Chapter 6.5, Problem 1QR

7. The number of visible sun spots varies rhythmically from 10 to 110 per year over a period of eleven years. The 110 max last occurred in the year 2014. a.) b.) Write a sinusoidal function N (t) to model that number of sun spots per year, where t is in years past the year 2014. What number of sun spots does your function predict for the year 2018?

Match the function with its graph. You do not need to show your work. (8 pts) 12) 1) y = - 3) y = -tan x 2) у 4) у 3 -cot x = -CSC X = -sec x A) B) X -27 -21 C) D) X -21

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