In the following sentence, underline any incorrect verb form and write the correct form above it. If all the verbs in a sentence are correct, write C after the sentence.

Either I have leaved my keys somewhere, or they have fell out of my pocket.

Complete each sentence by writing the form of the verb indicated in parentheses.

The hospital staff ________ a lot of coffee. (present tense of consume)

Complete each sentence by writing the form of the verb indicated in parentheses.

The art students are _________ pictures of buildings. (present participle of sketch)

Find an equation of the tangent line to the given curve $2\left(x^2+y^2\right)^2=25\left(x^2-y^2\right)$ at the point $(3,1)$.

To protect a circular area of a park, cameras are placed on a lamppost in the center of the area. If each camera can observe an arc measure of $75^{\circ}$, how many cameras are needed to observe the entire area around the lamppost?

There are 42 Major League baseball players (as of 2011) that have hit 50 or more home runs in one season. Construct a stem and leaf plot and analyze the data.

$$\begin{array}{llllll}50 & 51 & 52 & 54 & 59 & 51 \\ 54 & 50 & 58 & 51 & 54 & 54 \\ 56 & 58 & 56 & 70 & 54 & 52 \\ 58 & 54 & 64 & 52 & 73 & 57 \\ 50 & 60 & 56 & 50 & 66 & 54 \\ 52 & 51 & 58 & 63 & 57 & 52 \\ 51 & 50 & 61 & 52 & 65 & 50\end{array}$$

If a compressive force of $3.3 \times 10^4 \mathrm{~N}$ is exerted on the end of a $22 \mathrm{~cm}$ long bone of cross-sectional area $3.6 \mathrm{~cm}^2$, $(a)$ will the bone break, and $(b)$ if not, by how much does it shorten?

Complete each sentence by writing the form of the verb indicated in parentheses.

The lost hikers ________ to the cleared path. (past tense of retreat)

Simplify the following given expression. Assume all variables are positive.

$$\sqrt[6]{2 x^6}$$

Complete of the following mini-dialogues by writing in the question that was asked.

(a qui / tu) - $\rule{5cm}{1pt}$

• J'ai téléphoné a ma cousine.

How long (in seconds) will it take you to swim 100 meters if you swim at $1.25 \mathrm{~m} / \mathrm{sec}$ ?

Find an equation of the tangent line to the graph at the given point.

Rotated ellipse: $7x^2-6\sqrt{3}xy+13y^2-16=0$ Point: $\left(\sqrt{3},1\right)$

Solve the first-order differential equation by separating variables.

$$y'=\dfrac{x^2+1}{3y^2}$$

Making Calculations The sun orbits the center of the Milky Way galaxy every 225 million years. How many revolutions has the sun made since the formation of Earth $4.6$ billion years ago?