the teacher sets a goal for a class average 88 on the test out of 12 students six score 82 and five score 86 what must the remaining score be in order to reach the goal

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?

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

Y= x – 6 x = –4 what is the solution to the system of equations? (–8, –4) (–4, –8) (–4, 4) (4, –4)