**Choice J**

$$\frac{15}{3.25}=\frac{10.4}{x}$$ $$15x=10.4\times3.25=33.8$$ $$x=\frac{33.8}{15}=2.25$$

**Choice B**

$$4-\frac{1}{4}-1\frac{1}{2}$$ $$=4-\frac{1}{4}-1\frac{2}{4}$$ $$=2\frac{1}{4}$$

**Choice B**

$$\angle BDC=90°-\angle CBD$$ $$\angle CBD=180°-25°-30°=55°$$ $$\Rightarrow \angle BDC=90°-55°=35°$$

**Choice F**

When two numbers (or variables) are multiplied together within parentheses, the exponent the quantity in the parentheses is raised to can be distributed to both terms.

$$xy^{a}=x^{a}y^{a}$$**Choice G**

$$\overline{PQ}:\overline{QR}=3:8$$ $$\overline{PQ}:\overline{PR}=3:3+8=3:11$$

**Choice K**

$$\overline{AC}=\frac{5}{6}\overline{JK}=\frac{5}{6}\times18=15$$ $$\frac{5}{6}=\frac{x}{18}\Rightarrow x=15$$

**Choice E**

Since the cost of each …

**Choice K**

$$$2,650\times2=$5,330$$ $$$5,330\div400=$13.25$$

**Choice B**

If the hour hand of …

**Choice G**

$$(4\times4)+(3\times4\times\frac{1}{2})$$ $$=16+6$$ $$=22$$

**Choice E**

Look for a point that …

**Choice K**

The table contains 11 scores …

**Choice E**

The range of the scores …

**Choice G**

$$(85+86+87+88+89+100)\div6=89.167$$ $$(88+80+100+99+98+x)\div6\gt89.167$$ $$(465+x)\div6\gt89.167$$ $$(465+x)\gt535$$ $$x\gt70$$

**Choice D**

By definition, a linear pair …

**Choice F**

$$=\frac{(x-11)(x-11)}{(x+11)(x-11)}$$ $$=\frac{(x-11)}{(x+11)}$$

**Choice B**

$$12x^{2}=28x$$ $$x(12x-28)=0$$ $$x=0$$ $$12x=28$$ $$x=\frac{28}{12}=\frac{7}{3}$$

**Choice H**

If “all blins are meeps,” …

**Choice C**

$$\Rightarrow -\frac{5x}{3}\gt10 $$ $$\Rightarrow -5x\gt30 …

**Choice J**

$$70=7\times10$$ $$110=11\times10$$ $$60=2\times3\times10$$ $$L.C.M=2\times3\times7\times11\times10=4,620$$

**Choice D**

$$3x+2y=12$$ $$\Rightarrow 2y=-3x+12$$ $$\Rightarrow y=-\frac{3}{2}x+6$$ …

**Choice K**

$$Slope =\frac{rise}{run} = \frac{(change\ in\ …

**Choice C**

$$ 2(x + 5) + …

**Choice G**

$$200(1.5)^{0.5\cdot 4}=200(1.5)^{2}=200\times2.25=450$$

**Choice A**

Based on the information, the …

**Choice J**

The function is increasing on …

**Choice E**

$$\frac{2+x}{2}=5\Rightarrow x=8$$ $$\frac{1+y}{2}=-1\Rightarrow y=-3$$ $$\Rightarrow …

**Choice H**

l: the length of the …

**Choice B**

You can set the denominator …

**Choice K**

$$\frac{135}{6}=22...3$$ $$0.\overline{428571}$$

The third number …

**Choice D**

There are two things that …

**Choice F**

$$A:\ (2, 6)$$ $$The\ slope\ …

**Choice A**

According to the problem, p …

**Choice J**

$$\frac{80}{\sin24˚}=\frac{x}{\sin110˚}$$ $$x= 80\times\frac{\sin110˚}{\sin24}$$

**Choice D**

$$\tan=\frac{opposite}{adjacent}$$ $$\tan\theta=\frac{3}{25}$$ $$\theta=\tan^{-1}\frac{3}{25}$$

**Choice G**

$$C=2\pi r$$ $$2\pi r\times\frac{90˚}{360˚}=2\pi(16)(\frac{1}{4})=8\pi$$

**Choice C**

$$sin0°=0；sin90°=1；sin180°=0；sin270°=-1；sin360°=0；$$ $$cos0°=1；cos90°=0；cos180°=-1；cos270°=0；cos360°=1；$$

**Choice K**

An obtuse triangle is a …

**Choice A**

The amplitude is equal to …

**Choice H**

The equation for y varying …

**Choice B**

If this system has infinite …

**Choice H**

$$Area\ of\ a\ circle:\ \pi …

**Choice A**

$$\frac{a}{b}=\frac{7}{11}$$ $$\Rightarrow a:b=7:11$$ $$a=7r,\ b=11r$$ …

**Choice F**

The volume of a rectangular …

**Choice C**

$$\log_{a}{x}+\log_{a}{y}=\log_{a}{xy}$$ $$\log_{}{(x-2)x}=\log_{}{x^{2}-2x}$$

**Choice J**

The median score is the …