Design an experiment to demonstrate the actions of the sympathetic and parasympathetic nervous systems on the iris of the eye.

What is visual hierarchy in map design? How is the hierarchy related to the map purpose?

Constructing a rain gutter is a design for a rain gutter.

Express the volume $V$ as a function of $\theta$.

The chemical energy released by burning a gallon of gasoline is approximately $1.3 \times 10^5 \mathrm{~kJ}$. Estimate the total energy used by all of the cars in the United States during the course of one year. What fraction does this represent of the total energy use by the United States in one year (currently about $5 \times 10^{20} \mathrm{~J}$ )?

Modern halogen lightbulbs allow their filaments to operate at a higher temperature than the filaments in standard incandescent bulbs. For comparison, the filament in a standard lightbulb operates at about $2900 \mathrm{~K}$, whereas the filament in a halogen bulb may operate at $3400 \mathrm{~K}$. The human eye is most sensitive to a frequency around $5.5 \times 10^{14} \mathrm{~Hz}$. Which bulb produces a peak frequency closer to this value?

$\textbf{\textcolor{#4257b2}{Mental Math}} \hspace{10pt}$ Determine whether the given number is a solution of the inequality.

$$\begin{array}{lcccc} x < -8 \hspace{25pt} & \textbf{a.}\hspace{10pt}0 \hspace{25pt} & \textbf{b.}\hspace{10pt} -8 \hspace{25pt} & \textbf{c.}\hspace{10pt} -9 \hspace{25pt} & \textbf{d.}\hspace{10pt} -7\\ \end{array}$$

Construct a Plackett-Burman design for 10 variables containing 24 experimental runs.

The first bridge over the Piscataqua River, built in $1794$, was the longest bridge in the world. The modern bridge, completed in $1971$, is not the world's longest, but it is well known for its elegant symmetric design. The bridge connects Kittery, Maine with Portsmouth, New Hampshire.

Does the Piscataqua River Bridge have any lines of symmetry? If so, make a simple sketch of the bridge and draw all of its lines of symmetry.

{a) Summarize What was the Monroe Doctrine?

{b) Clarify Problems Would the United States have looked weak if it had jointly issued a warning with Britain? Explain.

Listed below are nine technical accounting terms used in this chapter:

$$\begin{array}{lll}\text { Unrecorded revenue } & \text { Adjusting entries } & \text { Accrued expenses } \\ \text { Book value } & \text { Matching principle } & \text { Accumulated depreciation } \\ \text { Unearned revenue } & \text { Materiality } & \text { Prepaid expenses }\end{array}$$

Each of the following statements may (or may not) describe one of these technical terms. For each statement, indicate the accounting term described, or answer "None" if the statement does not correctly describe any of the terms.
f. A type of account credited when customers pay in advance for services to be rendered in the future.

True/False: Read design books alone will make you a great designer.

William Prout (1815) proposed that all other atoms are built up of hydrogen atoms, suggesting that all elements should have integral atomic masses based on an atomic mass of one for hydrogen. This hypothesis appeared discredited by the discovery of atomic masses, such as $24.3 \mathrm{u}$ for magnesium and $35.5 \mathrm{u}$ for chlorine. In terms of modern knowledge, explain why Prout's hypothesis is actually quite reasonable.

Design a controlled experiment to determine whether earthworms are more attracted to perfume or to vinegar.

The production of forages in the United States equals $\rule{1cm}{1pt}$ percent of the land used for crops.
a. $25$
b. $35$
c. $50$\ d. $65$