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Answer:
9
Explanation:
The average rate of change of f(x) in the closed interval [ a, b ] is
here [ a, b ] = [ 0, 2 ]
f(b) = f(2) = 2² + 7(2) + 10 = 4 + 14 + 10 = 28
f(a) = f(0) = 0 + 0 + 10 = 10, hence
average rate of change = = = 9
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