SOLUTION: I need help solving the following If f(x)=5x+2 and g(x)=x+1 Solve G(-5) F(1\5)+g(0) 4g(-3) I tried to work by -5+1=6 5(1\5)+2+(0+1) 3+14 4x-7 Thank you in

Algebra ->  Finance -> SOLUTION: I need help solving the following If f(x)=5x+2 and g(x)=x+1 Solve G(-5) F(1\5)+g(0) 4g(-3) I tried to work by -5+1=6 5(1\5)+2+(0+1) 3+14 4x-7 Thank you in       Log On


   

Question 922977: I need help solving the following
If f(x)=5x+2 and g(x)=x+1
Solve
G(-5)
F(1\5)+g(0)
4g(-3)
I tried to work by
-5+1=6
5(1\5)+2+(0+1)
3+14
4x-7
Thank you in advance


Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Part 1) Plug in x = -5 and simplify.


g%28x%29=x%2B1


g%28-5%29=-5%2B1


g%28-5%29=-4
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Part 2) Plug in x = 1/5 into f(x). Plug x = 0 into g(x). Simplify and add


f%28x%29=5x%2B2


f%281%2F5%29=5%281%2F5%29%2B2


f%281%2F5%29=3


-----------------


g%28x%29=x%2B1


g%280%29=0%2B1


g%280%29=1


---------------


f%281%2F5%29%2Bg%280%29+=+3+%2B+1


f%281%2F5%29%2Bg%280%29+=+4
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Part 3) Plug in x = -3. Simplify. Then multiply both sides by 4.


g%28x%29=x%2B1


g%28-3%29=-3%2B1


g%28-3%29=-2


4%2Ag%28-3%29=4%2A%28-2%29


4%2Ag%28-3%29=-8

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Let me know if that helps or not. Thanks.

If you need more help, feel free to email me at jim_thompson5910@hotmail.com

My Website: http://www.freewebs.com/jimthompson5910/home.html