I need help please, I have no idea what to do, my brain's dead

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.

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3