**need now plz** find the difference. 6.4 - 1.28 = 1) 4.12 2) 4.22 3) 5.12 4) 5.22

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.