Lisa is cooking muffins. the recipe calls for 7 cups of sugar. she has already put in 5 cups. how much more cups does she need to put in?

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?

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?