6. Jayden does 2 sit-ups on the first day of the month, 4 the next day, 8 the
next day, and so on. If she continues with the pattern, how many total sit-
ups will she have done after 30 days?

Find the difference (8ab+a+2) - (3ab+6)

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?

Sara can take no more than 22 pounds of luggage on a trip. her suitcase weighs 112 ounces. how many more pounds can she pack without going over the limit?