Question

If f(x) = x + 7 and g(x)=1/x , what is f(g(x)) ?

a. 1/x+7

b. x+7+1/x

c.1+7/x

d. 1/x+7

Answer 1

D

Explanation:

edge 2020

Answer 2

f(g(x)) =
`(1)/(x) + 7`

Explanation:

If f(x) = x + 7 and g(x)=1/x

f(g(x)), plug in g(x) in f(x)

g(x) = 1/x

first we plug in 1/x for g(x)

f(g(x)) =
`f((1)/(x))`

Plug in 1/x for x in f(x)

f(x) = x + 7

f(g(x)) =
`f((1)/(x))` =
`(1)/(x) + 7`