Determine which relation is a function. O {(-4, 1), (-2, 3), (-1, 2), (3, 5), (3, 2)}
O {(4, 1), (-2, 3), (-1, 1), (-1, 5), (3, 2)}
O {(-4, 1), (-2, 3), (-2, 1), (-1, 5), (3, 2)}
O {(-4, 3), (-2, 3), (-1, 2), (2,5), (3, 2)}

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

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?

If there is 20 dogs in the shelter and 5 dogs get homes, and then 43 more dogs come. how many dogs are there in the shelter?