1. A relation is defined as: A) a set of ordered pairs

B) a set of ordered pairs that have exactly one output for a given input.

C) a set of ordered pairs in which the outputs have a constant rate of change

D) a set of ordered pairs whose graph is a line through the origin

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?

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.