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27-09-2016
Mathematics

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What is the average rate of change for f(x)=x^2 9x=18 from x= -10 to x=10

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27-09-2016

Hello,

I suppose you keyboard is french shift "=" ===>"+"

f(x)=x²+9x+18
f(10)=100+90+18=198
f(-10)=100-90+18=28

rate=(198-28)/(10-(-10))=170/20=17/2

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