Question

Forensic specialists can estimate the height of a deceased person from the lengths of the person's bones. These lengths are substituted into mathematical inequalities. For instance, an inequality that relates the height h, in centimeters, of an adult female and the length f, in centimeters, of her femur is
|h − (2.47f + 54.10)| ¡Ü 3.72. Use this inequality to estimate the possible range of heights, rounded to the nearest 0.1 centimeter, for an adult female whose femur measures 45.39 centimeters.
The height, to the nearest 0.1 cm, is from ____ cm to ____ cm.

Answer 1

well, you have
2.47f+54.1 = 166.21
So,
|h-166.21| <= 3.72
166.21-3.72 <= h <= 166.21+3.72
and so on