**Choice D**

$$\frac{3150}{50}=63 \\$$ $$ \frac{3150}{70}=45 \\$$ $$ \frac{3150}{90}=35$$ Choice D.

**Choice J**

Let the number of small wreaths be x, thus the number of large wreath 2x: $$30\times 2x+20\times x=4\times 60 \\$$ $$ \Rightarrow x=3 \\$$ $$ \Rightarrow 2x=6$$

**Choice J**

For Ben's:

Total charge = Number of miles

For Ronnie's:

Total charge = 0.5 Number of miles +40

Number of miles = 0.5 Number of miles +40

Number of miles = 80

**Choice A**

Apparently LM is greater than 90°, while the rest are either equal to or smaller than 90°.

**Choice G**

$$Area \ of \ shaded \ region=12\times 6+ \frac{12\times3}{2}=80 \ square \ feet$$ Since one 1-quart container of paint will cover 50 square feet, 2 will be needed.

**Choice K**

Since AB and DE are parallel, $$\angle A=\angle E$$ Also, since: $$\angle BCA=\angle DCE$$ It follows that $$\angle BAC=\angle CED$$

**Choice A**

$$\frac{8+x}{2}=2 \\$$ $$ \Rightarrow x=-4\\ $$ $$\frac{-8+y}{2}=-4 \\ $$ $$\Rightarrow y=0$$

**Choice J**

Let the lesser integer be n: $$(2n+1)n=78 \\$$ $$ \Rightarrow n=6\\ $$ $$\Rightarrow 2n+1=13$$

**Choice A**

The set of numbers are …

**Choice J**

Let the number of points …

**Choice E**

$$x^2-5x+6=0 \\$$ $$ \Rightarrow …

**Choice K**

The colony is doubled 15 …

**Choice C**

$$3\times4\times2=24$$

**Choice G**

$$2x+1=9 \\$$ $$ \Rightarrow x …

**Choice B**

$$5- \frac{4\times9 + 12 …

**Choice H**

$$(4+d)(6+d)=2 …

**Choice C**

$$\tan ?=\frac{8}{3}\\$$ $$\Rightarrow …

**Choice J**

The standard equation of a …

**Choice D**

$$Area=\pi r^2=\pi …

**Choice K**

When a point is reflected …

**Choice E**

$$\angle BAD=180°-54°$$

**Choice F**

$$\tan \alpha =\frac{\sin\alpha …

**Choice E**

I. n=19/3

II …

**Choice J**

$$\frac{6x^{13}y^3 …

**Choice C**

xy must be divisible by …

**Choice G**

$$2a=4c \\$$ $$ \Rightarrow a=2c$$

**Choice D**

By week w, Jan will …

**Choice J**

$$\Rightarrow q=4-p \\$$ $$ \Rightarrow -p …

**Choice A**

As can be seen from …

**Choice J**

$$\Rightarrow 7y=-8x+112 \\$$ $$ \Rightarrow …

**Choice B**

$$d=\frac{8}{\sqrt{2 …

**Choice J**

Since each point on the …

**Choice A**

$$\frac{3}{x}=12$$ $$ \Rightarrow …

**Choice G**

$$C=\frac{9}{5}C …

**Choice E**

The equation is not defined …

**Choice G**

$$\widehat{AB}=\frac{2\pi …

**Choice B**

Area = 10 x 5 = 50

**Choice G**

$$a_{5}=a_{2}\cdot …

**Choice C**

**Choice F**

$$\pi (\frac{2}{2})^2 …

**Choice C**

$$(n - 2)\cdot s +s …

**Choice F**

$$\frac{1+100\times11}{100 …

**Choice E**

$$\frac{8\times16}{2\times4 …

**Choice H**

Apparently, the relationship between size …

**Choice B**

$$3^{x+1}=3^{3x-6 …

**Choice F**

$$\Rightarrow AC=\frac{1}{2 …

**Choice A**

(3, 45°+360°n) represent …

**Choice K**

$$\Rightarrow y=\frac{2-\frac …