Mathematics: What is the value of h(-7)? h(x) = [3x] - 1 a. 22 b. -20 c. -22 d. 20

What is the value of h(-7)? h(x) = [3x] - 1 a.

xxaurorabluexx

11.03.2022

substitute -7 in for x

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

= -21-1

= -22

Choice C

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thanerose

11.03.2022

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

Option D

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chartrow7

30.09.2021

8.85-1.71=7.14

7.14g/cm³

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