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29 July, 00:15

Find the average rate of change for f (x) = x2 + 9x + 18 from x = 10 to x = 20.

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  1. 29 July, 00:19
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    First, plug x=10 and x=20 into the formula:

    10^2+90+18

    190+18

    208

    20^2+180+18

    400+198

    598

    598-208=390

    390/10 = 39

    The average rate of change is 39
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