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Ber [7]
3 years ago
5

Please help! functions operations. explain please

Mathematics
2 answers:
Ronch [10]3 years ago
8 0
<h2>Hello!</h2>

The answer is: a. 40

<h2>Why?</h2>

We are working with composite functions, so, to find the correct option, first we need to follow the composite function process:

(h\circ g)=h(g(x))

So,

We are given the functions:

g(x)=2x\\\\h(x)=x^{2}+4

So,

(h\circ g)(x)=(2x)^{2}+4

Then, evaluating with "x" equal to -3, we have:

(h\circ g)(-3)=(2*-3)^{2}+4=(-6)^{2}+4=36+4=40

So, the correct option is a. 40

Have a nice day!

ValentinkaMS [17]3 years ago
7 0

Answer:

a. 40

Step-by-step explanation:

Given

g(x)=2x and h(x)=x^2+4

(h\circ g)(x)=h(g(x))

(h\circ g)(x)=h(2x)

We plug in 2x into  h(x)=x^2+4.

(h\circ g)(x)=(2x)^2+4

(h\circ g)(x)=4x^2+4

We now substitute x=-3.

(h\circ g)(-3)=4(-3)^2+4

(h\circ g)(-3)=36+4=40

The correct choice is A.

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