Question

The domain for f(x) and g(x) is the set of all real numbers.

Answer 1

Answer:

$3x^2 + 8$  

Step-by-step explanation:

Given functions,

$f(x) = 3x + 8 ----(1)$

$g(x) = x^2 -----(2)$

Since,

(fog)(x) =  f( g(x) )      ( Composition of functions )

$=f(x^2)$             ( From equation (2) )

$=3x^2 + 8$          ( From equation (1) )

Hence,

$(fog)(x)=3x^2 + 8$  

Second option is correct.

Answer 2

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