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December 22, 2014

December 22, 2014

Posted by **Benjamin** on Thursday, November 25, 2010 at 9:47pm.

x=3, f(x)=4

x=4 f(x)=5

x=5 f(x)=6

x=6 f(x)=3

x=7 f(x)=5

x=8 f(x)=7

What is the value of 2f(5)-f(4)?

I did this wrong obviously, but what I did was figure out the function of five from the table (4), and multiplied that by 2 to get 8. I then got the function of 4, which was 3. I subtracted 3 from 8 to get 5, but that was not the correct answer, it was 7 according to my answer key. Where did I go wrong?

- Algebra -
**Damon**, Thursday, November 25, 2010 at 9:54pmwhen x = 5, f(x) = 6

when x = 4, f(x) = 5

2*6 - 5

12 - 5

7

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