Answer:
the anwser is B
Step-by-step explanation:
No no no no no no no no no no
Answer:

Step-by-step explanation:
Given
--- average time
--- the variation
Required
The inequality to represent the scenario
To do this, we simply add and subtract the variation from the average time.
i.e.

So, the inequality is:

Solve:

Answer:
a) 4, b) 10
Step-by-step explanation:
a)
1) - 7 + 3 = - 4
2) | - 4| = 4
b)
1) |- 7| = 7
2) 7+3 = 10