The temperature outside in the morning was 15 degrees below zero. by lunchtime it was 25 degrees above zero. how many degreees did the temperature rise ?

Someone . me. compound probability

The water has been on the stove y=9.5x+62.1 after how many minutes will the tempature be 138.1 f

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?