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4. If f(x) = 4x + 1 and g(x) = −x − 2, find (f + g)(−1).

Mathematics
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What (f+g)(-1) means is to add up the two binomials first f(x)+g(x), and then substitute -1 for x. What do you get when you do: 4x+1-x-2
5x=3???
There's no = sign, just simplify it by adding like terms: First do 4x-x, and then 1-2

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Other answers:

3x -1?
Good.. now just substitute -1 for x
so it's going to be -1x or -3x
No, because you are substituting something for x, there will be no more x. Do this: 3(-1)-1
-4!!
Yep! You got it!
thank you please come to my next post!
Sure..

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