Rachel went to the store and bought 2 1/2 pounds of chicken for 9.00 at this rate how much would it cost for 1,2 and 3 pounds of chicken

1 pound of chicken cost ?blank
2 pounds of chicken cost ?blank
3 pounds of chicken cost ?blank

1 pound of chicken cost $3.60 (9.00 / 2.5)

2 pounds of chicken cost $7.20 (3.60 x 2)
3 pounds of chicken cost $10.80 (3.60 x 3)