kenziebrooke91
kenziebrooke91 kenziebrooke91
  • 07-12-2018
  • Mathematics
contestada

If fx()=8-10x and g(x)=5x+4, what is the value of (fg)(-2)

Respuesta :

nap14hockey
nap14hockey nap14hockey
  • 07-12-2018

So, we are looking for F of G of 2. So, we need to work backwards and find G(x) first.


[tex]g(-2)=5(-2)+4\\g(-2)=-6[/tex]

So we know that g(-2) = -6, now we take thatt -6 and plug in into f(x)

[tex]f(g(-2))=f(-6)\\f(-6)=8-10(-6)\\f(-6)=8+60\\f(-6)=68[/tex]


68 is the answer

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