3rd grade math help.?

[xlOvely.]

1) Mark is going to empty several 1-cup containers into 1-pint containers. He fills 6 1-pint containers. How many 1-cup containers did he start with?

2) A third grade class visited a dairy farm. Each student recieved 1 cup of mily to drink. The class recieved a total of 14 pints of milk. How many were in the class?

3) Joe scoops milk from a large vat. He uses a 5-gallon pail. He needs to leave 15 gallons in the vat. He dips 5 times with the pail. How many gallons of milk were in the vat at the start?

4)what is the number in the pattern likely to be?
3 4 6 9 13 18