Please help it timed

Aformual for 8 bottles of window cleaner calls for 6 cups of rubbing to customers alcohol 2 1/4 gallons of water and 1 1/2 cups of ammonia alcohol would the forula call if a factory made 1,280 bottles for stores to sell to customers

Which expression is rational? 6. , square root two, square root 14, square root 49

Math i have no idea how to do a and b