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OpenStudy (anonymous):
If f(x) = x + 4 and g(x) = 5x - 2, find (gf)(4).
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OpenStudy (daniellelovee):
I think that you have to multiply both equations and then multiply what you got by 4
OpenStudy (anonymous):
ok
OpenStudy (daniellelovee):
(x+4)(5x-2)=(the equation you got/number)(4)=answer
OpenStudy (anonymous):
so how do add the two equations ?
OpenStudy (faiqraees):
or easy way is plug 4 in both functions and multiply their answer
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OpenStudy (daniellelovee):
you can use the FOIL method
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