Events A and B are mutually exclusive. Find the missing probability.

P(A) = 1/4 P(B) = 13/20 P(A or B) = ?

4/5

1/2

9/10

3/8

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

X-10/4 when x = –18 a 7 b –2 c –7 d 2

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. find the probability that a randomly selected bill will have an amount greater than $173, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?