Each week, tasha saves 65% of the money she earns babysitting and spends the rest. this week she earned $40. how much money did she save than spend this week?

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?

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance

Sawsan recorded the favorite sport of students at her school. she surveyed 200 students. how many students chose tennis?