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If f(x)=9-2|x + 21, find f(-7).

If f(x)=9-2|x + 21, find f(-7).-example-1
User Prodigga
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1 Answer

10 votes
10 votes

Answer: -1
Same thing as the other question that I helped you with:

Substitute -7 for x

f(-7) = 9-2|-7+2|

Treat the absolute value like parenthesis, and follow the rules of PEMDAS

9-2|-5|

9-2*5

9-10

-1

User LenB
by
2.7k points
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