Question

Write a compound inequality that represents the situation. On a road in the city of Rochester, the maximum speed is 50 miles per hour, and the minimum speed is 20 miles per hour.

A. 20 ≥ x ≥ 50
B. 20 > x > 50
C. 20 < x < 50
D. 20 ≤ x ≤ 50

Answer 1

The answer is D because you can drive 20 mph or 50 mph or anywhere in between.  This sign means less than or equal to. Hope this helps!