Asap will mark as brainilest to whoever gets it right

Icould really use some with this question.

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is

Dana wants to identify the favorite professional baseball team of people in her community. she stands outside a local sporting goods store and asks every other person who enters, "what is your favorite professional baseball team? " will the results of her survey be valid? explain.