Write and solve an inequality:
a full-year membership to a gym costs $325 upfront with no monthly
charge. a monthly membership costs $100 upfront and $30 per month
for what numbers of months is it less expensive to have a monthly membership?

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?