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AP Calculus AB/Unit 8: Applications of Integration
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Average Value on a Combined Interval

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The average value of a function ff on the interval [1,3][1, 3] is 55, and its average value on the interval [3,7][3, 7] is 22. What is the average value of ff on the interval [1,7][1, 7]?

A

52\displaystyle \frac{5}{2}

B

77

C

72\displaystyle \frac{7}{2}

D

33

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