William recorded data to determine the relationship between the time usage, x, and the percentage of charge left on his mobile phone, y. he graphed the data and drew the line of best fit. the equation of the line of best fit is y = -10x + 100. about how many hours will it take for the phone lose its charge completely?

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

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?