How to decompose 9/10 in 3 ways

What is the order of magnitude for the number of liters in a large bottle of soda served at a party

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?

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x