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3 years ago

What is the value of h(-7)? h(x) = [3x] - 1 A. 22 B. -20 C. -22 D. 20

2 answers:

6 0

For this case we have to find the value of $h (x)$ when $x = -7$ , for this we must replace the value of $x = -7$ in the given equation. We have:

$h (x) = | 3x | - 1$

Substituting $x = -7$

$h (-7) = | 3 (-7) | - 1$

Considering what $+ * - = -$

$h (-7) = | -21 | -1$

Taking into account that by definition; $| -a | = a$

$h (-7) = 21-1\\h (-7) = 20$

So, $h (-7) = 20$

Answer:

Option D

Eddi Din [679]3 years ago

3 0

substitute -7 in for x

f(-7) = (3*-7) -1

= -21-1

= -22

Choice C

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