SOLUTION: I don't understand functions, I really need help. 17.) Let f(x)= 5x and g(x)=-2x-3. Find (f+g)(x), (f-g)(x), and (f/g)(x). In exercises 19- 30, for each pair of functions,

Algebra ->  Functions -> SOLUTION: I don't understand functions, I really need help. 17.) Let f(x)= 5x and g(x)=-2x-3. Find (f+g)(x), (f-g)(x), and (f/g)(x). In exercises 19- 30, for each pair of functions,       Log On


   

Question 1122581: I don't understand functions, I really need help.
17.) Let f(x)= 5x and g(x)=-2x-3. Find (f+g)(x), (f-g)(x), and (f/g)(x).

In exercises 19- 30, for each pair of functions, f and g, determine the domain of f+g.
19.) f(x)=3x+7, g(x)=9x+10
27.) f(x)= 8x/x-2, g(x)=6/2-x
29.) f(x)=x^2, g(x)=x^3

In exercises 31- 50, let f(x)=x^2+4x and g(x)=2-x. Find each of the following.

47.) The domain of f+g
49.) The domain of f/g
Answer by josgarithmetic(39613) About Me  (Show Source):
You can put this solution on YOUR website!
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I don't understand functions, I really need help.
17.) Let f(x)= 5x and g(x)=-2x-3. Find (f+g)(x), (f-g)(x), and (f/g)(x).
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Those notational forms indicate arithmetic to be done between the functions.

%28f%2Bg%29%28x%29=f%28x%29%2Bg%28x%29

and

%28f-g%29%28x%29=f%28x%29-g%28x%29

and

%28f%2Fg%29%28x%29=%28f%28x%29%29%2F%28g%28x%29%29


FOLLOW THOSE USING YOUR GIVEN FUNCTIONS!