SOLUTION: For the functions f(x)=3x+9 and g(x)=2x-4, find (f+g)(0) Need this solved step by step line by line with explanation for each line

Algebra ->  Linear-equations -> SOLUTION: For the functions f(x)=3x+9 and g(x)=2x-4, find (f+g)(0) Need this solved step by step line by line with explanation for each line       Log On


   

Question 1139328: For the functions f(x)=3x+9 and g(x)=2x-4, find (f+g)(0)
Need this solved step by step line by line with explanation for each line
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

f%28x%29=3x%2B9 and g%28x%29=2x-4,
find %28f%2Bg%29%280%29
first find %28f%2Bg%29%28x%29
%28f%2Bg%29%28x%29=f%28x%29%2Bg%28x%29......plug in given values
%28f%2Bg%29%28x%29=3x%2B9%2B2x-4......add like terms
%28f%2Bg%29%28x%29=5x%2B5
now find %28f%2Bg%29%280%29
%28f%2Bg%29%28x%29=5x%2B5.......plug in 0 for x
%28f%2Bg%29%280%29=+5%2A0%2B5
%28f%2Bg%29%280%29=+0%2B5
%28f%2Bg%29%280%29=+5