Nitrous oxide, chloroform, diethyl ether, halothane, and sevofl urane are compounds that have been used in general anesthesia. Pick two or more of these compounds and look up their structures. What are the advantages and disadvantages of each anesthetic? Is the anesthetic still widely used, and if not, why has its use been curtailed or discontinued?

Write the decimal number one hundred twenty and three hundredths.

Find the least-squares solution $\vec{x}^{*}$ of the system $A \vec{x}=\vec{b},$ where

$$A=\left[\begin{array}{l} 1 \\ 2 \\ 3 \end{array}\right]$$

and

$$\vec{b}=\left[\begin{array}{l} 3 \\ 2 \\ 7 \end{array}\right].$$

Draw a sketch showing the vector $\vec{b},$ the image of A, the vector $A \vec{x}^{*},$ and the vector $\vec{b}-A \vec{x}^{*}.$

For each vector function r=r(t), find the unit tangent vector T and the principal unit normal vector N at t. $\mathbf{r}(t)=2 \cos (2 t) \mathbf{i}+2 \sin (2 t) \mathbf{j}+5 \mathbf{k} \quad t=\frac{\pi}{2}$

Write the decimal number one hundred twenty-three thousandths.

Indicate whether each statement is true or false, and justify your answer. Be sure to state any additional assumptions you may need.

In the 1970s, researchers were worried that, while Americans were living longer than previous generations, they were actually less healthy during old age than before. This phenomenon is known as the “compression of morbidity.”

The table given below is a relative frequency distribution for healthy people under the age of 65 .

$$\begin{aligned} &\text { Flu Vaccines }\\ &\begin{array}{|l|c|c|c|} \hline & \text { Got the Flu } & \begin{array}{c} \text { Did Not } \\ \text { Get the Flu } \end{array} & \text { Total } \\ \hline \text { Vaccinated } & \square & 54 \% & 60 \% \\ \hline \text { Not Vaccinated } & \square & \square & \square \\ \hline \text { Totals } & 15 \% & \square & 100 \% \\ \hline \end{array} \end{aligned}$$

a. Copy and complete the table.

b. What is the probability of getting the flu, given that you are vaccinated?

c. What is the probability of getting the flu, given that you have not been vaccinated?

Given u=<-2,5> and v<4,3>, find each vector

-5v

One hundred forty percent of 310 is what number?

Find an equation of the tangent plane to the given parametric surface at the specified point.

$$x=u^2+1, y=v^3+1, z=u+v; (5, 2, 3)$$

Completing each sentence with a word or phrase.

The ability to adapt to change and stressful events in healthy and flexible ways is known as ______________.

If n is a perfect number, prove that $\sum_{d \mid n} l / d=2$.

Vocabulary Is $4 b^{2}-26 b+169$ a perfect square trinomial? Explain.

A single-cell amoeba doubles every 4 days. About how long will it take one amoeba to produce a population of 1000? (A) 10 days (B) 20 days (C) 30 days (D) 40 days (E) 50 days