In the following sentence, cross out any misspelled noun and write the correct spelling above it. If a sentence contains no misspelled words, write C after the sentence.

Most of the passer-bys stopped to examine the vendor’s wares.

Find the GCF of each expression. Then factor the expression. -7x² + 7x + 14

$A=\frac{s_1+s_2+...+s_n}{n}$ is the average of the real numbers $s_1,...,s_n$. Prove or disprove: There exists $i$ such that $s_i\gt A$. What proof technique did you use?

Write the trigonometric expression as an algebraic expression.$\newline$

$$\sin (2 \arcsin x)$$

Write an algebraic expression for the verbal expression. the sum of three times $a$ and the square of $b$

Let $H$ be a subgroup of $G$. Show that $H$ is normal in $G$ if and only if $aH a^{-1}=H$ for all $a \in G$.

A uniform bar of n-type silicon of $2-\mathrm{\mu m}$ length has a voltage of $1 ~\mathrm{V}$ applied across it. If $N_{D}= 10^{16} / \mathrm{cm}^{3}$ and $\mu_{n}=1350 \mathrm{~cm}^{2} / \mathrm{V} \cdot \mathrm{s}$, find (a) the electron drift velocity, (b) the time it takes an electron to cross the $2-\mu \mathrm{m}$ length, (c) the drift-current density, and (d) the drift current in the case that the silicon bar has a cross-sectional area of $0.25 \mathrm{~\mu m}^{2}.$

Circle each word, phrase, or clause that modifies the underlined word in each sentence. Do not include the words a, an, or the.

The crisp $\underline{\text{days}}$ of autumn follow summer.

A projectile is launched straight up at 141 m/s. How fast is it moving at the top of its trajectory? Suppose it is launched upward at

$$45^\circ$$

above the horizontal plane. How fast is it moving at the top of its curved trajectory?

Find the two numbers. The second number is 5 more than the first number. Their sum is 5.

Rewrite the expression as an algebraic expression in x.

$$\tan \left( \sin ^ { - 1 } x \right)$$

Find the equation of the line through the given pair of points.

$$(2,5),(3,9)$$

Rewrite the expression as an algebraic expression in x.

$$\sec \left( \sin ^ { - 1 } x \right)$$

Selena became angry when a fly _______ her sandwich by landing on top of it.