Kathy spent 2/3 of her money on a story book and saved 3/4 of the rest in the bank. If she has five dollars left, how much money did she have in the beginning?

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?

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

Which of the following would be a reasonable estimate for the weight of a pencil? a. 1 × 10^-20 lb b. 1 × 10^20 lb c. 1 × 10^2 lb d. 1 × 10^-2 lb