"Dr. Tydings has found that, over the years, 95% of babies he has delivered have weighed y pounds, where

|y-8.0|<=1.5
What range of weights corresponds to this inequality?"

1 answer

|y-8.0|<=1.5

y-8 ≤ 1.5 and -y+8 ≤ 1.5
y ≤ 9.5 and -y ≤ -6.5
y ≤ 9.5 and y ≥ 6.5

which can be written as
6.5 ≤ y ≤ 9.5

(or in words, y is between 6.5 and 9.5 inclusive