SOLUTION: evaluate f(x)=2/9x-9/2 for x=9

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Question 670462: evaluate f(x)=2/9x-9/2 for x=9
Answer by ReadingBoosters(3246) About Me  (Show Source):
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f(9) = %282%2F9%29%289%29+-+9%2F2
= 2 - 9%2F2
= 2%282%2F2%29+-+9%2F2
= 4%2F2+-+9%2F2+=+-5%2F2
f(9) = -5%2F2
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