Kayla's mother recorded what color shirt Kayla wore on each day recently.
green 1
brown
black
red
blue
What is the experimental probability that Kayla will wear a black shirt tomorrow?
Write your answer as a fraction or whole number.

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?

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)