Determine whether each statement makes sense or does not make sense, and explain your reasoning.

In a whispering gallery at our science museum, I stood at one focus, my friend stood at the other focus, and we had a clear conversation, very little of which was heard by the $25$ museum visitors standing between us.

In "The Return," the author describes the Honia River's movement as serpentine. The word serpentine ends with the Latin suffix -ine, which means "of," "like," or "related to." The suffix appears in many adjectives that describe animals or animal-like qualities. For instance, you may be familiar with canine, meaning "related to dogs." Explain why the word serpentine may be a fitting word to describe a river.

U.S. Population The Museum of Science in Boston displays a running total of the U.S. population. On May $11, 1993.$ the toxal was increasing at the rate of $1$ person every $14$ sec. The displayed population figure at $3:45$ P.M. that day was $257,313,431$. Assume that the relative growth rate is constant.
What is the relative growth rate per year ( $365$ days)?

A high-school science student claims to have invented simple glass marbles that collide with perfectly elastic collisions. He demonstrates this by shooting one marble at another; you hear the snap of the collision and then see the marbles move apart. Repeated measurements always indicate that the collision is elastic within the measurement accuracy of the equipment. Is the collision elastic? Why or why not?

An animal shelter has 200 calendars to sell at a fair as a fundraiser. Each of the calendars costs $3 to make. The shelter hopes to sell all the calendars and make a total profit of$1800. a. What should the selling price of each calendar be? b. If the shelter hopes to make a profit of $2000, what should the selling price of each calendar be? Explain your reasoning.

Physiologists who study warm-blooded animals are interested in the basal metabolic rate, which is one measure of the energy needed for survival. It can be measured from the volume and composition of expired air. In the following table weight $W$, in pounds, of an animal and its basal metabolic rate $B$, in kilocalories per day. ${ }^{28}$ a. Find a formula that models $B$ as a power function of $W$. b. Describe the metabolic weight of a warm-blooded animal to be $W^{0.75}$ if $W$ is its weight in pounds. Direct comparison of food among animals of different sizes is not easy. Clearly, large animals will consume more food than small ones, and to compensate for this, we should take account of the energy needed for survival-that is the basal metabolic rate $B$. To compare the maximum daily food intake among animals of different sizes, we divide this food intake by the metabolic weight.

$$\begin{array}{|l|c|c|} \hline \text { Animal } & \text { Weight } W & \begin{array}{c} \text { Basal metabolic } \\ \text { rate } B \end{array} \\ \hline \text { Rat } & 0.38 & 20.2 \\ \hline \text { Pigeon } & 0.66 & 30.8 \\ \hline \text { Hen } & 4.3 & 106 \\ \hline \text { Dog } & 25.6 & 443 \\ \hline \text { Sheep } & 101 & 1220 \\ \hline \text { Cow } & 855 & 6421 \\ \hline \end{array}$$

The following sentence maybe contain an appositive phrase. Draw one line under each appositive phrase and two lines under the word or words to which the phrase refers. If the sentence contains no appositive phrase, write None at the end of the sentence

The Museum of Science and Industry, located in Chicago's Hyde Park neighborhood, is near the University of Chicago.

In a student's science fair project, he claims that the height $h$ in feet above the ground of an object shot from a catapult can be modeled by $h(t)=16 t^2-32 t+32$, where $t$ is the time in seconds after the object is shot. What are the zeros of this function? Explain why the values of the zeros indicate that the student's model is incorrect.

The Latin root -frict- means "to break." A refractory animal is one that "breaks away." The root -fract-*appears in some scientific and mathematical terms, such as fraction. A fraction is a part "broken away" from a larger whole. Explain how the root -fract- contributes to the meaning of below italicized word.
"The fracto-stnatus clouds were ragged and appeared in long, threadlike layers."

ENVIRONMENTAL SCIENCE: Solar Cells Cumulative world production of solar cells for generating electricity is predicted to be $16 e^{0.43 t}$ thousand megawatts, where t is the number of years since 2010 . Find the rate of change of this quantity at the value of t corresponding to 2020 and interpret your answer. [Note: Three thousand megawatts is enough to power a million homes.]

Suppose a wave of negative "animal spirits" overruns the economy, and people become pessimistic about the future. To stabilize aggregate demand, the Fed could$\underline{\phantom{\text{justtextsetekst}}}$ its target for the federal funds rate or Congress could$\underline{\phantom{\text{justtextsetekst}}}$ taxes.

a. increase; increase

b. increase; decrease

c. decrease; increase

d. decrease; decrease

Most people think of science as being a specific, exact discipline, with a "correct" answer for every problem. Yet you were introduced to the concept of uncertainty in scientific measurements. What is meant by "uncertainty"? How does uncertainty creep into measurements? How is uncertainty indicated in scientific measurements? Can uncertainty ever be completely eliminated in experiments? Explain.

At the peak of a beanbag animal fad, one sales representanve soid 12,000 of the animals in one month. Each month after that, the rep sold about 20 % fewer animals.

a. Determine how many beanbag animals the rep sold in the 6 th month after the peak.

b. State the month the rep first sold fewer than 1000 animals.

The Latin root -frict- means "to break." A refractory animal is one that "breaks away." The root -fract-*appears in some scientific and mathematical terms, such as fraction. A fraction is a part "broken away" from a larger whole. Explain how the root -fract- contributes to the meaning of below italicized word.
Although her motives were good, she was guilty of an infraction of the law