What is the sum of f and g? f (x) = 10-2x g (x) = 7x+5

A. (F+g) (x) = 5+5x

B. (F+g) (x) = 5+9x

C. (F+g) (x) = 15+5x

D. (F+g) (x) = 15+9x

F (x) = x^2-x-1 Over which interval does f have an average rate of change of zero? Choose 1 answer: (Choice A) 2≤x≤3 (Choice B) -5≤x≤5 (Choice C) 2-1≤x≤2 (Choice D) -3≤x≤-2

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