Katherine spends 1,089.72 each month for rent and supplies to run her salon. if she charges $18 for a haircut how many hair cuts must kathrine do to cover her expencives? round to the nearest whole numbers

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?

Bernice paid $162 in interest on a loan of $1800 borrowed at 6%. how long did it take her to pay the loan off?

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.