Question

Let g(x) = 2x and h(x) = x^2 +4. evaluate (g• h) (3)

Answer 1

(g• h) (3) = 26

Explanation:

g(x) = 2x

h(x) = x² + 4

To find (g• h) (3) first find ( g • h)(x)

To find ( g • h)(x) substitute h(x) into every x in g(x)

That's

( g • h)(x) = 2( x² + 4)

( g • h)(x) = 2x² + 8

Now substitute 3 into ( g • h)(x)

(g• h) (3) = 2(3)² + 8

= 2(9) + 8

= 18 + 8

(g• h) (3) = 26

Hope this helps you