Answer:

Explanation:
Given:
Height of the guardrail = 106 cm
Deviation in height = 7 cm.
We need to write the inequality that represents the acceptable height of a guardrail.
Solution:
From the given statement the height of the guardrail is 106 cm with 7 cm deviation.
So, we write the absolute value inequality as:

Now, we solve the inequality.

Add 106 in whole equation.


Therefore, the height of the guardrail must be 99 cm to 113 cm.