
Concept explainers
The inequality that represents the speed limit given in the sign.

Answer to Problem 47HP
Explanation of Solution
Given:
The posted speed limit on an interstate highway is shown below,
Calculation:
Let the speed of the vehicle on the interstate highway is represented by x .
So as per the speed limit board, the speed limit should be maximum of 70 mph and minimum of 40 mph, that is x should be greater than or equal to 40 mph and less than or equal to 70 mph.
So, the inequality that represents the sign is
The graph of the inequality is shown below,
Chapter 5 Solutions
Algebra 1
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