You can
put this solution on YOUR website!The number of milligrams of a certain substance per liter in samples of drinking water all tested within .05 of 40 milligrams per liter. Write this information as an inequality, using an absolute value.
--------------------
Find the range of the measurements: 40-0.05 = 39.95 mg
Find the mid-point of that range: (40+0.05)/2 = 20.025
Find the distance from the mid-point to an end point:
40-20.025 = 19.075
-----------------
Let x be one of the measures in the proper range:
|x-20.025| < 19.075
This describes all the measurements that are within 19.075 of 20.025
===================
Cheers,
Stan H.
(