The Enormous State University’s Accounting Society has decided to produce a version of the ballet Swan Lake, in which all the female roles (including all of the swans) will be danced by men, and vice versa. Here are the main characters: Prince Siegfried. Prince Siegfried’s Mother. Princess Odette, the White Swan. The Evil Duke Rotbart. Odile, the Black Swan. Cygnet #1, young swan. Cygnet #2, young swan. Cygnet #3, young swan. The ESU Accounting Society has on hand a total of 4 female dancers and 12 male dancers who are to be considered for the main roles. How many possible casts are there?

Design an algorithm to convert the change given in quarters, dimes, nickels, and pennies into pennies.

The United States Postal Service delivers about

$$2 ^ { 8 } \cdot 5 ^ { 2 }$$

pieces of mail each second. There are

$$2 ^ { 8 } \cdot 3 ^ { 4 } \cdot 5 ^ { 2 }$$

seconds in 6 days. How many pieces of mail does the United States Postal Service deliver in 6 days? Write your answer as an expression involving powers.

Explain the design of the type of gas container shown in the illustrations and graphs in Lesson 3.

A design change is required in the valve interface circuit of the temperature-control system shown . The new design will have a valve interface input resistance of $10 \mathrm{k} \Omega$. Determine the effect this change has on the temperature-to-voltage conversion circuit.

The General Social Survey asks questions about one's happiness in marriage. Is there an association between gender and happiness in marriage? Use the data in the table to determine if gender is associated with happiness in marriage. Treat gender as the explanatory variable.

$$\begin{matrix} \text{ } & \text{Male} & \text{Female} & \text{Total}\\ \text{Very happy} & \text{7690} & \text{7942} & \text{15551}\\ \text{Pretty happy} & \text{3738} & \text{4447} & \text{8185}\\ \text{Not too happy} & \text{259} & \text{460} & \text{719}\\ \text{Total} & \text{11606} & \text{12849} & \text{24455}\\ \end{matrix}$$

How did the creation of the Fed improve our banking system?

Understanding the evolution of our banking system is important because it helps us understand the features of modern banking. Today we have a managed money supply that is accepted by everyone simply because people have faith in it. Which of the following is true about our banking system today?

b) Today's money is not backed by gold or silver.

During the $1990$s, General Electric put together a long string of consecutive quarters in which the firm managed to meet or beat the earnings forecasts of Wall Street stock analysts. Some skeptics wondered if GE “managed" earnings to meet Wall Street's expectations, meaning that GE used accounting gimmicks to conceal the true volatility in its business. How do you think GE's long run of meeting or beating earnings forecasts affected its cost of capital? If investors learn that GE's performance was achieved largely through accounting gimmicks, how do you think they would respond?

(a) Recall: What connections does Rodriguez draw between Addison's London and modern-day Tijuana?
(b) Recall: As a journalist, in what way must Rodriguez present the border town of Tijuana?
(c) Speculate: Because of th e parallels Rodriguez notes between him self and Tijuana, do you think he can be objective in his presentation of the city? Why or why not?

The area of the United States is about 6,000,000 square miles. The area of Hawaii is about 11,000 square miles. Use an indirect proof to show that at least one of the fifty states has an area greater than 120,000 square miles.

According to the Federal Bureau of Investigation, there is a violent crime in the United States every 22 seconds ( $A B C$ News, September 25, 2007). Assume that the time between successive violent crimes is exponentially distributed.

a. What is the probability that there is a violent crime in the United States in the next one minute?

b. If there has not been a violent crime in the previous minute, what is the probability that there will be a violent crime in the subsequent minute?

The United States Capitol Rotunda is a circular room located in the Capitol Building in Washington, D.C. The radius of the room is 48 feet. What is its circumference?

Design a brochure that explains information about each biological molecule discussed in this chapter.

In the catalytic converters fitted to modern cars, carbon monoxide and oxides of nitrogen in the exhaust gas are converted to other substances.

a. i. Why is carbon monoxide removed?

ii. Give one harmful effect of nitrogen dioxide.

b. What is meant by a catalytic reaction?

c. In one reaction in a catalytic converter, nitrogen monoxide (NO) reacts with carbon monoxide to form nitrogen and carbon dioxide. Write a balanced equation for this reaction.