It is Saturday morning, and Jeremy has discovered he has a leak coming from the water heater in his attic. Since plumbers charge extra to come out on weekends, Jeremy is planning to use buckets to catch the dripping water. He places a bucket under the drip and steps out of the house to walk the dog. In half an hour, the bucket is 1/5 of the way full. What is the rate at which the water is leaking per hour? Write an equation that represents the relationship between the number of buckets filled, y, in x hours. What is the longest that Jeremy can be away from the house before the bucket will over flow?