Use the table to answer a and b. х
у
10
-25
20
--50
30
-75
40
- 100
a) Is the graph proportional?
b) Write an equation for the table.

Which graph shows a function with a range of all real numbers greater than or equal to -1

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?

Angela took a general public aptitude test and scored in the 88th percentile for aptitude in accounting. what percentage of the scores were at or below her score?