let f(x)=x^2+7 and g(x)=x+2/x. find f o g -4
show work, !

(fog)(-4)= 29/4

Explanation:

g(x)=(x+2)/x if x is -4 like it says, we have:

g(x)= (-4+2)/-4 = -2/-4=1/2

f(x)=x^2+7 If we plug in 1/2 [g(-4)] for x:

(1/2)^2+7

1/4+7= 1/4 + 28/4= 29/4

Hope you get it!

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

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