Answer: D
Step-by-step explanation:
Answer: 
Step-by-step explanation:
1. You have the following information given in the problem:
- The distance to the nearest exit door is no more than 150 feet.
-
represents the distance to the nearest exit door, in feet.
2. Therefore, keeping the information above on mind, you know that the distance to the nearest exit door (
) must be less than or equal to 150 feet, then, you can express this as following:

The answer is D 16a: 1,2,3,4,8,16 and 18ab:1,2,3,46,9,18 a,b