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chris215
 one year ago
Find f(g(4)) if f(x)=7/(x+2) and g(x)= (x+5)^2
5/2
7/2
37/4
7/3
chris215
 one year ago
Find f(g(4)) if f(x)=7/(x+2) and g(x)= (x+5)^2 5/2 7/2 37/4 7/3

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zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1\[\large\rm \color{royalblue}{f(x)=\frac{7}{x+2}},\qquad\qquad \color{orangered}{g(x)=(x+5)^2}\]

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1\[\large\rm \color{orangered}{g(4)=(4+5)^2}\]\[\large\rm \color{orangered}{g(4)=?}\]

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1\[\large\rm \color{orangered}{g(4)=1}\]Ok good. So then:\[\large\rm \color{royalblue}{f(}\color{orangered}{g(4)}\color{royalblue}{)}\quad=\quad \color{royalblue}{f(}\color{orangered}{1}\color{royalblue}{)}\]

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1So the problem boils down to\[\large\rm \color{royalblue}{f(1)=?}\]simply plugging 1 into your f(x) function.

chris215
 one year ago
Best ResponseYou've already chosen the best response.0oh i get it thank u !!
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