Lizzy tutors for x hours a week after school at a job that pays $4 an hour. She has accepted a job that pays $8 an hour as a barista working y hours a week. She will work both jobs. She is able to work no
more than 15 hours a week, due to school commitments. Lizzy wants to earn at least $80 a week,
working a combination of both jobs.
Write two inequalities that can be used to represent the situation.