Ms. murphy has to select 4 swimmers out of 9 swimmers to create a relay team. in how many ways can she create a relay team? 3,024 6,561 15,120 362,856

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.