3.What is the equation of a circle with a center located at (4, -1) and a radius of 9 a. (x + 4)2 + (y - 1)2 = 9
b. (x + 4)2 + (y - 1)2 = 81
c. (x - 4)2 + (y + 1)2 = 9
d. (x - 4)2 + (y + 1)2 = 81

Two parallel lines are crossed by a transversal.what is value of x

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?

Aculture started with 4,000 bacteria. after 5 hours, it grew to 5,200 bacteria. predict how many bacteria will be present after 19 hours. round your answer to the nearest whole number.