Mr. Shen likes for his homework assignments to have 2 addition problems for every 3 subtraction problems.
Which of the following homework assignments could Mr. Shen create?

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?

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315

The holiday party will cost $160 if 8 people attend. if there are 40 people who attend the party, how much will the holiday party cost