Follow the directions for Question 9 for the complex ions in Question 6.

The electric field near the Earth is about $150 \mathrm{~N} / \mathrm{C}$. Approximately how much electric energy is stored in the Earth's electric field in the first $10 \mathrm{~m}$ above the Earth's surface?

(a) Contrast How did the New Jersey Plan differ from the Virginia Plan?

(b) Link Past and Present Which key part of the New Jersey Plan is not part of our Constitution today? Why not?

In the high-level AGC circuit, $R_1=$ $10 \mathrm{k} \Omega, R_2=10 \mathrm{k} \Omega, R_5=75 \mathrm{k} \Omega$, and $R_6=1.2 \mathrm{k} \Omega$. If $R_7$ can vary from $180 \Omega$ to $10 \mathrm{M} \Omega$, what is the minimum voltage gain of the circuit? The maximum?

Describe why plants in the phylum Bryophyta are sometimes called pioneer plants.

Draw the condensed structural formula for the follow- ing amides: $N$-ethylpropanamide

Explain why the system cannot be solved by matrix inverse methods. Discuss methods that could be used and then solve the system.

$$\begin{aligned}-2 x_{1}+4 x_{2} &=-5 \\ 6 x_{1}-12 x_{2} &=15 \end{aligned}$$

Create a slope field for the differential equation dy/dx=2x/3y.

Describe how $\mathrm{CO_2}$ is delivered to rubisco in (a) $\mathrm{C_3}$ plants, (b) $\mathrm{C_4}$ plants, and ( c) CAM plants.

$$x_1-2 x_2+3 x_3=1$$

$$2 x_1-3 x_2-2 x_3=3$$

$$x_1-x_2-5 x_3=2$$

Explain why the system cannot be solved by matrix inverse methods. Discuss methods that could be used and then solve the system.

The pH of a $0.0642~M$ solution of a monoprotic acid is $3.86$. Is this a strong acid?

Involve credit cards that calculate interest using the average daily balance method. The monthly interest rate is $1.5\%$ of the average daily balance. Each exercise shows transactions that occurred during the March $1$–March $31$ billing period. In each exercise,

a. Find the average daily balance for the billing period. Round to the nearest cent.

b. Find the interest to be paid on April $1$, the next billing date. Round to the nearest cent.

c. Find the balance due on April $1$.

d. This credit card requires a $\$10$ minimum monthly payment if the balance due at the end of the billing period is less than $\$360$. Otherwise, the minimum monthly payment is $\frac{1}{36}$ of the balance due at the end of the billing period, rounded up to the nearest whole dollar. What is the minimum monthly payment due by April $9$?

$$\begin{matrix} \text{Transaction Description} & \text{Transaction Amount}\\ \text{Previous balance, } & {\$ }\text{ 7150.00}\\ \text{March 1 Billing Date}\\ \text{Match 4 Payment} & {\$ \text{ 400 credit}}\\ \text{March 6 Charge: Furniture} & {\$ \text {1200}}\\ \text{March 15 Charge: Gas} & {\$ \text {40}}\\ \text{March 30 Charge: Groceries} & {\$ \text{50}}\\ \text{March 31 End of billing period}\\ \text{Payment Due Date: April 9}\\ \end{matrix}$$

Which contributes more to GDP-the production of an economy car or the production of a luxury car? Why?

Create a coloring book of day- neutral plants, long-day plants, and short- day plants. Label the drawings with the plant's name and how it responds to darkness.