SOLUTION: If f(x)=x^2+3x+1 and g(x)=2x+5, then (f+g) (3) equals what?
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Question 312918: If f(x)=x^2+3x+1 and g(x)=2x+5, then (f+g) (3) equals what?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
I already showed you that (x)\ =\ x^2\ +\ 5x\ + 6)
So just like evaluating any function at a particular number, just substitute and do the arithmetic.
(3)\ =\ (3)^2\ +\ 5(3)\ + 6)
Do your own arithmetic.
John
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