Let f(x) = x2 + 6 and g(x) = x + 8x g ( x ) = x + 8 x . find ( g o f)(­ -7)

(g o f)(-7) = 495

Step-by-step explanation:

We have two functions:

To find (g o f) we must introduce the function f(x) inside the function g(x). That is, we take the function g(x) and where there is an x we place the function f(x). So:

(g o f)(x) = g(f(x))

(g o f)(x) =

We simplify:

(g o f)(x) =

(g o f)(x) =

Now we have (g o f)(x). To find (g o f)(-7) we substitute x = -7 in the function:

(g o f)(-7) =

(g o f)(-7) = 495

step-by-step explanation:

. your answer will contain x - and y -terms. (1 point) x ( ¿¿ 2 − 7 ) 2 +( y 2 − 9 ) 2 √ ¿ 12. what is the distance from the directrix (the crocodile river) to the point ( x , y )? write this equation. your answer will contain a y -term.

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step-by-step explanation: