Answer:
175 ≤ x ≤ 185
Step-by-step explanation:
Given that :
Steve's weight for the past 20 years = 180 pounds ; give or take 5 pounds
The average weight of 180 has stayed within range of plus or minus 5 pounds of the mean weight
|x - 180| ≤ 5
x - 180 ≤ 5
x ≤ |5 + 180|
x ≤ 185
Also:
|x - 180| ≥ - 5
x - 180 ≥ - 5
x ≥ |-5 + 180|
x ≥ 175
Hence, Steve's range of possible weight :
175 ≤ x ≤ 185
