Determine whether the paired values represent a proportional relationship. (-2,-4).(-1, - 2).(1, 2).(2, 4)

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.