Foreign Voltage In other countries, normal household voltage is 220 volts. It is acceptable for the actual voltage $x$ to differ from normal by at most 8 volts. A formula that describes this is.
$$
|x-220| \leq 8
$$
$$
\begin{array}{l}{\text { (a) Show that a voltage of } 214 \text { volts is acceptable. }} \\ {\text { (b) Show that a voltage of } 209 \text { volts is not acceptable. }}\end{array}
$$
