A periodic function f(x) has a period of 7. The values of f(-2), f(0), and f(3) are -4, 6, and 2, respectively. Predict the value of each of the following. If a prediction is not possible, explain why.
a) f(70)
b) f(26)
c)f(-32)
d) f (80)
please help

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

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