A news reporter says that 28% of highschool students pack their lunch. your highschool has 600 students.
how many students in your highschool would you expect to pack their lunch?

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?

Which of the following is the shape of a cross section of the figure shown below

I’m stuck on this equation, anyone got the answer?