Okay, the problem goes something like this: Wants to maximize profit

1000 guests at a fundraiser. there will be non-alcholic drinks for $1 and alcoholic drinks for $1.75.

the constraints are:

each drink has to be from an unused plastic cup of which there are 4000

non-alcoholic drinks must account for 30% of drinks served

each guest can only have 2 alcoholic drinks

each non-alch must have 2 ice cubes and alcoholic drinks have to have 4, there are 15,000 ice cubes.

The constraints are my problem. I know the objective function is 1x+1.75y=z
and i think one of the constraints are gonna be x+y is less than/equal too 4000 and after that i get losted....please help