Stella left downtown Miami, and three hours after Martha left downtown Miami going 42 mph faster to catch up. After another 1.5 hours, Martha caught up. Find Stella's speed.

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?