Question 1114016
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average rate of change of the function f(x) = x ^2 + 5x + 1 over the interval  [-2,1] is equal to


{{{(f(1) - f(-2))/(1 - (-2))}}}.     (*)


Calculate f(1) and f(-2).


I hope you know how to do it. // If not, let me know . . . 


Then use the expression (*).
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