Answer
a. acceptable.
b. not acceptable.
Work Step by Step
The formula that describes the acceptable voltage is
$ |x-110|\leq 5$
We plug in the given voltage values and if the inequality proves true, then the voltage is acceptable.
a. Since $|108-110|=2\le 5$, then the voltage of $108$ Volts is acceptable.
a. Since $|104-110|=6\gt 5$, then the voltage of $104$ Volts is not acceptable.
