Rhianna claims that she can find the value 7 1/25-(-j) is any rational number, by using the expression |j| +7 1/25. Which TWO state meets decribe Rheane claim

Is it true or false i’m trying to pass this test so i can leave school

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?

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?