Can someone plzzz me i have midterms tomorrow

You can find the constant of proportionality by finding the ratio of

What is the order of these fractions from least to greatest 2/3 7/10 5/8 65/100

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?