Write the underlying inequality and then solve. Help !

Question

Manufacturing the ideal diameter of a piston for one type of car engine is 90.000mm. The actual diameter can vary from the ideal by at most 0.008 mm. Find the range of acceptable diameter for the piston. 

Answer 1

m represents the actual measurement

|m - 90.000| ≤ 0.008

 

Or

 

90.000 - 0.008 ≤ m ≤ 90.000 + 0.008