find f(-5) if f(n) = 2n +13

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- Nov 12th 2007, 04:49 PMidon'tlikemath243[SOLVED] functions
find f(-5) if f(n) = 2n +13

- Nov 12th 2007, 05:11 PMmayflower29
Sub -5 for n and solve. :)

- Nov 12th 2007, 05:17 PMJonboy
yup mayflower is exactly correct.

in case you don't know, the f (-5) means f of -5. So you don't mess with the left side of the equation, it just tells you what you are doing.

You answer will be: f (-5) = some natural number