## anonymous 5 years ago The Thomas family had an internet system for their family room installed. The installation fee was $90 and the monthly internet charge is 30$. If the Thomas family has paid \$450 so far, for how many months have they had the internet? Show all work.

1. anonymous

$90+30x=450$ $30x=450-90=360$ $x=\frac{360}{90}=4$

2. anonymous

typo!

3. anonymous

$x=\frac{360}{30}=12$