Solve.The inequality |x - 12.9| ? 0.4 describes the range of acceptable lengths x, in centimeters, of a certain metal rod used in a manufacturing process. Solve the inequality and interpret the solution.

A. { x  } or (-?,  ? ?); the length of the metal rod is acceptable at or below 12.5 cm and at or above 13.3 cm.
B. { x  } or (-?,  ? ?); the length of the metal rod is acceptable at or below 13.3 cm and at or above 13.7 cm.
C. { x  } or ; the length of the metal rod is acceptable between a low of 12.5 cm and a high of 13.3 cm.
D. { x  } or ; the length of the metal rod is acceptable between a low of 13.3 cm and a high of 13.7 cm.


Answer: C

Mathematics

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