**Choice F**

30 pens still remain, enough for 6 packages;

20 notebooks still remain, enough for 10 packages;

24 envelopes still remain, enough for 8 packages;

84 cookies still remain, enough for 7 packages;

45 candy bars still remain, enough for 9 packages;

Apparently, pens are the bottleneck.

**Choice B**

$$(0.1x^2+3x+80) +(0.5x^2-2x+60)=(0.1x^2+0.5x^2)+(3x-2x)+(80+60)=0.6x^2+x+140$$

**Choice D**

$$\frac{AC}{AB}=\frac{AE}{AD} \\$$ $$ \Rightarrow \frac{AC}{6+5+4}=\frac{12}{6} \\$$ $$ \Rightarrow AC=30$$

**Choice A**

$$35\times(10+x)=42\times10 \\$$ $$ \Rightarrow 10+x=12 \\ $$ $$\Rightarrow x=2$$

**Choice H**

The range of y = sin (x-π) is : $$-1\leq y \leq 1$$ The range of y = -5sin (x-π) is : $$-5\leq y \leq 5$$ The range of y = 3-5sin (x-π) is : $$-2\leq y \leq 8$$

**Choice D**

$$g(-3)=(-3)^2-4=5 \\$$ $$ \Rightarrow f(g(-3))=f(5)=2\times5+1=11$$

**Choice G**

$$3f+4c=$25 \\$$ $$f+2c=$11 \\$$ $$\Rightarrow …

**Choice C**

$$71,\ 77,\ 78,\ 80,\ \underline{86, …

**Choice H**

Let the length of the …

**Choice E**

$$AB\times AD=1 \\$$ $$ \Rightarrow …

**Choice G**

$$\frac{16+x}{16+x+7+19}=\frac{3}{5} \\$$ $$ \Rightarrow x= …

**Choice E**

$$a^{-2}=(a^{2})^{-1}=\frac{1}{a^2}$$

**Choice F**

If Jamie's claim is true, …

**Choice D**

$$Area = 3 \times 5 …

**Choice H**

$$BD=\sqrt{3^2+4^2}=5$$

**Choice A**

The slope of a horizontal …

**Choice J**

When A is reflected over …

**Choice A**

$$8^2\cdot 4^{0.5}=(2^3)^2\cdot (2^2)^{0.5}=2^6\cdot 2=2^7$$

**Choice K**

$$Number \ of \ applicants …

**Choice B**

$$\log_{2}{\sqrt{8}}=\log_{2}{\sqrt{2^3}}=\log_{2}{2^{\frac{3}{2}}}=\frac{3}{2}$$

**Choice F**

$$\frac{\frac{90-15}{3}}{90}\times 360°=100°$$

**Choice E**

$$\frac{4}{5}+\frac{7}{x}= \frac{4x}{5x}+\frac{7\times5}{5x}=\frac{4x+35}{5x}$$

**Choice K**

$$\frac{353}{85+353+47}=\frac{353}{485}$$

**Choice D**

$$\frac{14+10+85+353}{560}\approx 0.83$$

**Choice H**

Of the 15 incorrectly classified …

**Choice A**

To simplify matters, let’s make …

**Choice G**

sin(-x°) = -sin x°

**Choice D**

Volume of box = 8 …

**Choice G**

Since ΔBCD is a right …

**Choice D**

200 days ago is equivalent …

**Choice G**

∠1 = ∠2

→3x - …

**Choice E**

The best way to solve …

**Choice H**

The Scalene Triangle has no …

**Choice D**

A sportswriter estimates the team …

**Choice J**

The denominator of f(x) = …

**Choice E**

555_ _ _ _

Each …

**Choice F**

The circle represents all dots …

**Choice B**

The question asks what x …

**Choice F**

The slope represents the copying …

**Choice E**

**Choice K**

The quickest way would be …

**Choice A**

To make one banner, ¼ …

**Choice F**

What you need to know: …

**Choice D**

According to the graph, the …

**Choice K**

Requirements for Matrix Multiplication:

In …