For numbers 1-4, let: f(x) = x +4
g(x) = 3x2 – 8
Simplify the following:
1. (f+g)(x)
2. (f-9)(x)
3. (f. g)(x)
4. (f/g)(x), what is the restricted
value?
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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