Whats 2+2*89*546/5^2+768/678*100000

How many $20 bills do you need to have to make $280

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.

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !