Jill arranged all of her baseball cards in a 4 rows of 9 cards. the she arranged the cards in 2 rows of 18 cards. how many other ways can jill arrange all of her baseball cards in equal rows?

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 the weekends, jeremy is planning to use buckets to catch the dripping water. he places a bucket under the drip and steps outside 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?