Circle the letter of the sentence in which the word in bold-faced type is used incorrectly.

a. In a monopoly, power is held on the basis of majority rule.

b. One student seems to monopolize every class discussion.

c. During the eighteenth century the British held an absolute monopoly on trade with the American colonies.

d. By gaining a monopoly in the steel industry, a few financiers virtually controlled the nation's economy.

The nurse is reviewing the medication history of a patient who is taking hydroxychloroquine. However, the patient’s chart does not reveal a history of malaria or travel out of the country. The patient is most likely taking this medication for what
a. Plasmodium.
b. thyroid disorders.
c. roundworms.
d. rheumatoid arthritis.

The reciprocal of a whole number is a fraction with __________ in the numerator.

The chemical factors that determine traits are called

a. chromosomes.

b. genes.

c. traits.

d. characters.

(Continuation of the previous Exercise) Suppose $\mathbf{r}(t)=f(t) \mathbf{i}+$ $g(t) \mathbf{j}+h(t) \mathbf{k}$ and $f, g$, and $h$ have derivatives through order three. Use the results of the Exercise discussed before to show that

$$\frac{d}{d t}\left(\mathrm{r} \cdot \frac{d \mathbf{r}}{d t} \times \frac{d^2 \mathbf{r}}{d t^2}\right)=\mathrm{r} \cdot\left(\frac{d \mathbf{r}}{d t} \times \frac{d^3 \mathbf{r}}{d t^3}\right) .$$

(Hint: Differentiate on the left and look for vectors whose products are zero.)

Sketch the graph of the reciprocal $1 / f$.

$$f(x)=x-3$$

What is the relationship between cholesterol and atherosclerosis?

According to the Christian Science Monitor, 80 percent of egg cartons are imprinted with the logo "Animal Care Certified.."27 This designation means that the United Egg Producers, the egg industry's trade group, has certified egg producers according to internal guidelines.

What do you think the typical consumer interprets "Animal Care Certified" to mean?

Graph each function. Based on the graph, state the domain and the range and find any intercepts.

$$f(x)=\left\{\begin{array}{ll}{\ln (-x)} & {\text { if } x \leq-1} \\ {-\ln (-x)} & {\text { if }-1<x<0}\end{array}\right.$$

(a) Find the domain of each function. (b) Locate any intercepts. (c) Graph each function. (d) Based on the graph, find the range. (e) Is f continuous on its domain?

$$f(x)=\left\{\begin{array}{ll}{x+3} & {\text { if }-2 \leq x<1} \\ {5} & {\text { if } x=1} \\ {-x+2} & {\text { if } x>1}\end{array}\right.$$

Find the $x$-coordinate(s) of the point(s) on the graph of the function at which the tangent line has the indicated slope.

$$f(x)=\cot x ; \quad m_{\tan }=-2$$

Find the reciprocal of the number.

-1/5

Which of the following statements are equivalent? Which ones are correctly indented?

(a)

if i > 0:
    x = 0
    y = 1
else:
    y = 0
    z = 0

(b)

if i > 0:
    x = 0
  y = 1
else:
    y = 0
    z = 0

(c)

if i > 0:
  x = 0
  y = 1
else:
    y = 0
    z = 0

(d)

if i > 0:
  x = 0
  y = 1
else:
    y = 0
  z = 0

Given matrices $A, B$, and $C$, multiply, if possible.

$$A=\left[\begin{array}{ll} 1 & 1 \\ 2 & 3 \end{array}\right] \quad B=\left[\begin{array}{rr} 3 & 2 \\ -1 & 1 \end{array}\right] \quad C=\left[\begin{array}{lll} 0 & 2 & 0 \\ 3 & 1 & 4 \end{array}\right]$$

CA