You have two cubes that you filled with water to make ice cubes. the first cube has a side length of 3 units. the second cube has a side length of 5 units. write an expression that you can use to find the total volume of ice you can make

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.