Aflashlight has 6 batteries, 2 are defective. what is the probability you select at least 1 good battery

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Factor and solve to find roots x squared -x - 90 =0

Which is the graph of the linear equation x – 2y = 6?