Match the skin structures in column B with their function listed in column A.
Column A$\hspace{5cm}$ Column B
(1) protection from ultraviolet radiation $\hspace{1cm}$(a) dendritic cells
(2) insulation, energy storage$\hspace{2.5cm}$(b) dermal vascular plexuses
(3) waterproofing and prevention of water loss$\hspace{0.5cm}$ (c) papillary layer of the dermis
(4) temperature regulation$\hspace{3cm}$ (d) hypodermis
(5) initiation of an immune response to invading bacteria $\hspace{0.4cm}$(e) melanocytes
(6) excretion of water, urea, and salts$\hspace{2cm}$(f) stratum corneum
(7) help in bonding the epithelium to the dermis$\hspace{2cm}$(g) eccrine sweat glands
$\hspace{7cm}$(h) reticular layer of the dermis

For women's collegiate competition, a basketball's circumference, mass, and bounce height must fall within given tolerance levels of regulation measurements. The table shows these tolerance levels äs well as measurements taken on five different basketballs. Which basketball meets all of the specified tolerances? $$ \begin{matrix} \text{ } & \text{Circumference (mm)} & \text{Mass (g)} & \text{Bounce Height (mm)}\\ \text{Tolerance} & {730.56 \pm 6.5} & {53.8.5 \pm 48.5} & {1358.5 \pm 63.5}\\ \text{Basketball #1} & \text{729.8} & \text{509.3} & \text{1343.4}\\ \text{Basketball #2} & \text{723.5} & \text{529.8} & \text{1299.8}\\ \text{Basketball #3} & \text{734.2} & \text{542.6} & \text{1293.5}\\ \text{Basketball #4} & \text{725.5} & \text{528} & \text{1364.5}\\ \text{Basketball #5} & \text{740} & \text{555.9} & \text{1407.4}\\ \end{matrix} $$

A sporting goods manufacturer produces regulation soccer balls at two plants. The costs of producing $x_1$ units at location 1 and $x_2$ units at location 2 are given by $C_1\left(x_1\right)=0.02 x_1^2+4 x_1+500$ and

$$C_2\left(x_2\right)=0.05 x_2^2+4 x_2+275$$

respectively. If the product sells for $50 per unit, then the profit function for the product is given by

$$P\left(x_1, x_2\right)=50\left(x_1+x_2\right)-C_1\left(x_1\right)-C_2\left(x_2\right) .$$

Find P(300,200).

A sporting goods manufacturer produces regulation soccer balls at two plants. The costs of producing $x_{1}$ units at location 1 and $x_{2}$ units at location 2 are given by $C_{1}\left(x_{1}\right)=0.02 x_{1}^{2}+4 x_{1}+500$ and $C_{2}\left(x_{2}\right)=0.05 x_{2}^{2}+4 x_{2}+275$ respectively. If the product sells for $50 per unit, then the profit function for the product is given by$P\left(x_{1}, x_{2}\right)=50\left(x_{1}+x_{2}\right)-C_{1}\left(x_{1}\right)-C_{2}\left(x_{2}\right)$. Find (a) P(250, 150), (b) P(300, 200), and (c) P(600, 400).

Your company, Sonic Video, Inc., has conducted research that shows the following probability distribution, where X is the number of video arcades in a randomly chosen city with more than 500,000 inhabitants:

$$\begin{matrix} \text{x} & \text{0} & \text{1} & \text{2} & \text{3} & \text{4} & \text{5} & \text{6} & \text{7} & \text{8} & \text{9}\\ \text{P(X=x)} & \text{.07} & \text{.09} & \text{.35} & \text{.25} & \text{.15} & \text{.03} & \text{.02} & \text{.02} & \text{.01} & \text{.01}\\ \end{matrix}$$

a. Compute the mean, variance, and standard deviation (accurate to one decimal place). b. As CEO of Startrooper Video Unlimited, you wish to install a chain of video arcades in Sleepy City, U.S.A. The city council regulations require that the number of arcades be within the range shared by at least 75% of all cities. What is this range? What is the largest number of video arcades you should install so as to comply with this regulation?

A species of bacteria can synthesize the amino acid histidine so it does not require histidine in its growth medium. A key enzyme, which we will call histidine synthetase, is necessary for histidine biosynthesis. When these bacteria are given histidine in their growth media, they stop synthesizing histidine intracellularly. Based on this observation alone, propose three different regulatory mechanisms to explain why histidine biosynthesis ceases when histidine is in the growth medium. To explore this phenomenon further, you measure the amount of intracellular histidine synthetase protein when cells are grown in the presence and absence of histidine. In both conditions, the amount of this protein is identical. Which mechanism of regulation would be consistent with this observation?

In developing a vaccine for the H1 N1 virus, a pharmaceutical company incurs a very high fixed cost. The marginal cost of delivering the vaccine to patients, however, is negligible (consider it to be equal to zero). The pharmaceutical company holds the exclusive patent to the vaccine. You are a regulator who must decide what price the pharmaceutical company is allowed to charge.

Draw a diagram that shows the price for the vaccine that would arise if the company is unregulated, and label it $P_M$. What is the efficient price for the vaccine? Show the deadweight loss that arises from the price $P_M$.

If you have trouble sleeping, you are in good company: About 50 million American adults suffer from sleep deprivation. Some causes, such as drinking caffeine in the evening, are avoidable. Certain medical conditions, such as asthma and depression, can interfere with sleep-and so can some medications. Sleep deprivation is something you should take seriously. It can leave you without the energy or physical strength to meet the day's demands. You may find it harder to think clearly, to solve problems, or to remember things, too. Irritability, moodiness, and anxiety often can be traced to a lack of sleep

The passage explains that sleep deprivation may result in-

A. moodiness and an inability to solve problems.

B. asthma and emotional irritability.

C. weight loss and anxiety.

D. anxiety and an increased need for medication.

A 60-Hz 20-kVA 8000/240-V-rms transformer has the following equivalent-circuit parameters:

$$\begin{matrix} \text{Primary resistance} & R_1 & \ 15 \Omega\\ \text{Secondary reistance} & R_2 & 0.02 \Omega\\ \text{Primary Leakage reactance} & X_ 1=\omega L_1 & 120 \Omega\\ \text{Secondary leakage reactance} & X_ 2=\omega L_2 & 0.15 \Omega\\ \text{Magnetizing reactance} & X_ m=\omega L_m & 30 k \Omega\\ \text{Core-loss resistance } & R_c & 200 k \Omega\\ \end{matrix}$$

Find the percentage regulation and power efficiency for the transformer for a 2-kVA load having a lagging power factor of 0.8.

A sporting goods manufacturer produces regulation soccer balls at two plants. The costs of producing $x_1$ units at location 1 and $x_2$ units at location 2 are given by $C_1\left(x_1\right)=0.02 x_1^2+4 x_1+500$ and

$$C_2\left(x_2\right)=0.05 x_2^2+4 x_2+275$$

respectively. If the product sells for $50 per unit, then the profit function for the product is given by

$$P\left(x_1, x_2\right)=50\left(x_1+x_2\right)-C_1\left(x_1\right)-C_2\left(x_2\right) .$$

Find P(250,150).

A least-squares regression line was used to model the relationship between putting average (on greens hit in regulation) and scoring average for golfers on the 2009 PGA tour. The corresponding residual plot is shown below.

a) Based on the residual plot, is a linear model appropriate for this association? Explain.

b) The point highlighted in red is for the golfer David Duval. Estimate his residual from the graph and interpret its value.

c) If you were to predict the scoring average for a golfer with a putting average of $1.86$, would you expect your prediction to be too low, too high, or just about right? Explain.

Go to www.federalreserve.gov and select the "Banking Information & Regulation" tab. Then click on the links "Banking Data" and "Large Commercial Banks." Once there, select the most recent quarterly data release. a. Which of the following banks has the most consolidated assets? b. Which of the following banks has the most domestic assets? c. What percentage of US GDP are the bank's domestic assets listed in part b? (Hint: You can find U.S. GDP at http://research.stlouisfed.org/fred2/ series/GDP?cid=106 using the links "Gross Domestic Product (GDP)" and then "Current-dollar and 'real' GDP.")

Most of the following selections were taken from letters-to-the-editor columns of news papers and magazines. Identify any fallacies that may be committed, giving a brief explanation for your answer. Then, if a fallacy is identified, discuss the possible factors that led the arguer to commit the fallacy. A parent would never give a ten-year-old the car keys, fix him or her a martini, or let him or her wander at night through a dangerous part of town. The same holds true of the Internet. Watch what children access, but leave the Net alone. Regulation is no substitute for responsibility.

Target Corporation provides the following footnote relating to its retirement plans in its 2017 10-K report: Defined Contribution Plans Team members who meet eligibility requirements can participate in a defined contribution 401(k) plan by investing up to 80 percent of their eligible earnings. as limited by statute or regulation. We match 100 percent of each team member's contribution up to 5 percent of eligible earnings.

Company match contributions are made to funds designated by the participant, none of which are based on Target common stock. Benefits expense related to these matching contributions was $219 million,$197 million, and $224 million in 2017, 2016, and 2015, respectively.

d. Do you see any problems for employees in Target's plan?