Question

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Answer 1

3

Explanation:

Interval 3 ≤ x ≤ 5 means all f(x) values from x= 3 inclusive to x = 5 inclusive

At x = 3 f(x) = 2

At x = 5, f(x) = 8

Change in f(x) = Δf(x) = 8 - 2 = 6

Change in x = Δx = 5 - 3 = 2

Average rate of change
= Δf(x)/Δx

= 6/2

= 3