Question

Sean is taking drivers ed. And the instructor asked him to stay within 2 miles of the posted speed limits. The current speed limit is 45 mph. Write an inequality that shows the acceptable speeds that Sean may drive

Answer 1

43 ≤ x ≤ 47 where x = Sean's speed (in mph)

Explanation:

Sean is taking driver's ed. The instructor asked him to stay within 2 miles of the posted speed limits. The current speed limit is 45 mph.

So, the maximum speed which Sean can reach is, (45 + 2) mph

=47 mph

and, the minimum speed which Sean can reach is, (45 - 2) mph

=43 mph

so, x where x = Sean's speed (in mph)