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h(x)=sqrt(4x)
The function
h is defined. What is the value of
h(9) ?
Choose 1 answer:
(A) 3
(B) 6
(c) 12
(D) 36

$h(x)=\sqrt{4 x}$ $\newline$ The function $h$ is defined. What is the value of $h(9)$ ? $\newline$ Choose $1$ answer: $\newline$ (A) $3$ $\newline$ (B) $6$ $\newline$ (C) $12$ $\newline$ (D) $36$

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Domain and range of square root functions: equations

Full solution

Q.

h(x)=\sqrt{4 x}

\newline

The function

h

is defined. What is the value of

h(9)

?

\newline

Choose

1

answer:

\newline

(A)

3

\newline

(B)

6

\newline

(C)

12

\newline

(D)

36

Substitute $x$ with $9$ : To find the value of $h(9)$ , we need to substitute $x$ with $9$ in the function $h(x) = \sqrt{4x}$ . $\newline$ Calculation: $h(9) = \sqrt{4 \times 9} = \sqrt{36}$
Calculate $h(9)$ : Now we find the square root of $36$ . $\newline$ Calculation: $\sqrt{36} = 6$

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