A coffee merchant sells two blends of coffee. Each pound of blend A contains 80% Mocha Java and 20% Jamaican and sells for $3 a pound. Each pound of blend B contains 35% Mocha Java and 65% Jamaican and sells for $2.25 a pound. The merchant has available 1000 pounds of Mocha Java and 600 pounds of Jamaican. Let x be the number of pounds of blend A and y be the number of pounds of blend B. The merchant will try to sell the amount of each blend that maximizes her Revenue. Let X be the number of pounds of blend A and Y be the number of pounds of blend B.

a. In the situation above, the objective function is: ___________
b. Since the merchant above has available 1000 pounds of Mocha Java, one constraint that must be satisfied is:
c. Since the merchant above has available 600 pounds of Jamaican, one constraint that must be satisfied is: