HURRY
Sara is planning her son's birthday party at Sky Zone. Sky
Zone requires parties to spend at least $300 per event. The
cost per guest is $9 for children (under 13 years old) and
$10.25 for teenagers (13 and older). Families have RSVP'd for 10 children and she knows her son will
want to invite some of his teenage friends. If Sara will spend at most $500 for the birthday party, what is
the range of teenagers her son can invite so that Sara stays within her budget?