Can anyone help to answer my previous questions?

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

Sherrie is baking a pie for her family. she leaves the room and comes back to 35% of the pie having been eaten before she can put the topping on. how much 1 square inch strips of dough will she need for the top, now that a portion is missing? round your answer to the nearest while nimber.

5cakes cost 3.50 how much do 7 cakes cost