Simplify into one fraction:
4/x+3-2/x-5

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?

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

In one month jillian made 36 local phone calls and 20 long-distance calls what was her ratio of local calls to long-distance calls for that month?