I need help with number 4 if you know it

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.

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?