A firm is a natural monopoly if ________. A. it can produce the good at a price below its competitor’s price B. it can produce a larger quantity of the good than other firms could C. the government grants it a public franchise or patent D. it can satisfy the market demand at a lower average total cost than other firms can

A good substitute for the word volatile in line 22 would be

A. insatiable.

B. undetermined.

C. unlikely.

D. unpredictable.

E. underestimated.

Determine what the approximation represents and how good the approximation is.

$$\sum_{n=1}^{\infty} \frac{(-1)^{n+1}(x-1)^n}{n}$$

In firefighting, a good water stream can be modeled by y = -0.003x$^2$ + 0.62x + 3
where x is the water’s horizontal distance traveled (in feet) and y is its corresponding height (in feet). If a firefighter is aiming a good water stream at a building’s window 25 feet above the ground, at what two distances can the firefighter stand from the building?

Write a letter to Dylan Thomas, explaining your opinion of the view of death expressed in "Do Not Go Gentle into That Good Night."

At f = 100 MHz, show that silver $\left(\sigma=6.1 \times 10^{7} \mathrm{S} / \mathrm{m}, \mu_{r}=1, \varepsilon_{r}=1\right)$ is a good conductor, while rubber $\left(\sigma=10^{-15} \mathrm{S} / \mathrm{m}, \mu_{r}=1, \varepsilon_{r}=3.1\right)$ is a good insulator.

Unlike metals, solid nonmetals are a. good conductors of heat and electric current. b. malleable. c. dull and brittle. d. ductile.

Economy worries. During the week of April 15, 2013, a Gallup Poll requested 1500 U.S. adults, aged 18 or over, how they rated economic conditions. Only $17 \%$ rated the economy as Excellent/Good. Make a $95 \%$ confidence interval for the true proportion of Americans who rated the U.S. economy as Excellent/Good.

Aqueous $\operatorname{tin}(\mathrm{II})$ ion, $\mathrm{Sn}^{2+}(\mathrm{aq})$, is a good reducing agent. Use data from Appendix D to determine whether $\mathrm{Sn}^{2+}(\mathrm{aq})$ is a sufficiently good reducing agent to reduce
(c) $\mathrm{Zn}^{2+}$ (aq) to $\mathrm{Zn}(\mathrm{s})$; and

Aqueous tin(II) ion, $\mathrm{Sn}^{2+}(\mathrm{aq})$, is a good reducing agent. Use data from Appendix $D$ to determine whether $\mathrm{Sn}^{2+}(\mathrm{aq})$ is a sufficiently good reducing agent to reduce
(b) $\mathrm{Fe}^{3+}(\mathrm{aq})$ to $\mathrm{Fe}^{2+}(\mathrm{aq}) ;$

Use given problem to get good upper and lower bounds for the sum of the first 10 million terms of the harmonic series.

A 2018 Pew Research Center report asked people who got their news from television which television sector they relied on primarily for their news: local TV, network TV, or cable TV. The results were used to generate the data in the table below.

a. Include the row totals, column totals, and the grand total in the table. Show the complete table with the totals.

b. Determine whether, for this sample, choice of cable TV is independent of being male. Explain your answer in the context of this problem.

Explain why a firm continues to produce those units of a good for which marginal revenue is greater than marginal cost.

Probabilities for three states of the economy and probabilities for the returns on a particular stock in each state are shown in the table below.

$$\begin{array}{lclc}\hline &&&\textbf{Probability of Stock}\\ &\textbf{Probability of}&\textbf{~~~~~~~Stock}&\textbf{Performance in Given}\\ \textbf{State of Economy}&\textbf{Economic State}&\textbf{Performance}&\textbf{Economic State}\\\hline \text{Good}&.3&\text{Good}&.6\\ &&\text{Neutral}&.3\\ &&\text{Poor}&.1\\\hline \text{Neutral}&.5&\text{Good}&.4\\ &&\text{Neutral}&.3\\ &&\text{Poor}&.3\\\hline \text{Poor}&.2&\text{Good}&.2\\ &&\text{Neutral}&.3\\ &&\text{Poor}&.5\\\hline \end{array}$$

What is the probability that the economy will be neutral and the stock will experience poor performance?