I NEED HELP FAST WHAT IS 80 + -9 - 5 + 89-66+44-9+87-100+213

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?

When is g(x) = 0 for the function g(x) = 5.23x + 4?

We have 339 ounces of jam to be divided up equally for 12 people how muny ounces will each person get