SOLUTION: Let f(x)=3x-5. Find (A) f(3) (B) f(h) (C) f(3)+f(h) (D) f(3+h) Please help! Thank you in advance!

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Question 894430: Let f(x)=3x-5. Find
(A) f(3) (B) f(h)
(C) f(3)+f(h) (D) f(3+h)
Please help! Thank you in advance!
Answer by Edwin McCravy(20056)   (Show Source): You can put this solution on YOUR website!
Let f(x)=3x-5. Find
(A) f(3)
Substitute 3 for x and simplify

    f(x)=3x-5
    f(3)=3(3)-5
    f(3)=9-5
    f(3)=4

(B) f(h)
Substitute h for x

    f(x)=3x-5
    f(h)=3h-5

(C) f(3)+f(h) 
Add the answers to (A) and (B) and simplify:

    f(3)+f(h) = 4+3h-5
    f(3)+f(h) = -1+3h

(D) f(3+h)
Substitute 3+h for x and simplify

    f(x)=3x-5
    f(3+h)=3(3+h)-5
    f(3+h)=9+3h-5
    f(3+h)=4+3h

Edwin
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