## anonymous one year ago Using complete sentences, explain how to find the average rate of change for f(x)=x^2+81x+7 from x = 4 to x = 7.

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1. amoodarya

$average \space rate =\frac{f(b)-f(a)}{b-a}$ in this case a=4 b=7 so find $\frac{f(7)-f(4)}{7-4}$