Salma made $253 for 11 hours of work.
at the same rate, how much would she make for 17 hours of work?

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?

Find two numbers if their sum is 91 and the ratio is 6: 7?

Mr. t has been dating his girlfriend for one year nine months and six days how many hours has mr. t been in a relationship