Unit #2 - Test Review

Solve for  $x$  :     $\frac{5}{6}\left(\frac{3}{8}-x\right)=16$  

• -19.575

• -18.825

• -16.3125

• -15.6875

Solve the formula for  $b$ . What is the 1st step? 

• Subtract $h$  from each side. 

• Add $h$  to each side. 

• Divide each side by $b$ . 

• Multiply each side by $2$ . 

Solve the following equation for  $h.$  
 $V=\frac{1}{3}\pi r^2h$  

•  $h=\frac{V}{3\pi r^2}$  

•  $h=\frac{3V}{\pi r^2}$  

•  $r=\frac{3V}{\pi h}$  

•  $r=\sqrt{\frac{3V}{\pi h}}$  

Solving the formula P = 2L + 2W for W is NOT equivalent to which equation?

• $\frac{P-2L}{2}=W$

•  $\frac{P}{2}-L=W$ 

• $\frac{1}{2}P-L=W$

•  $P-2L\ =\ W$ 

Solve for x:    $2+\frac{4}{9}x=4+x$  

•  $-\frac{18}{5}$  

•  $\frac{18}{5}$  

•  $\frac{54}{5}$  

•  $-\frac{54}{5}$  

When $x(x-5)(2x+5)$ is expressed as a polynomial in standard form, which statement about the polynomial is true?

• The constant term is 2.

• The leading coefficient is 2.

• The degree is 2.

• The number of terms is 2.

What is the solution to the equation:
 $4(x-7)=0.3(x+2)+2.11$  

•  $8.3$  

•  $8.7$  

•  $3$  

•  $-3$  

When solving $p^2+5=8p\ -\ 7,$   Kate wrote  $p^2+12=8p$  .  The property she used is

• associative property

• commutative property

• distributive property

• addition property of equality

 When simplified the expression $\left(a-b\right)^2$ is equivalent to

•  $a^2+b^2$  

•  $2a-2b$  

•  $a^2-2ab+b^2$  

•  $a^2-2ab-b^2$  

The formula for electrical power, $P$ is $P=I^2R$ , where $I$ is current and $R$ is resistance.  The formula for $I$ in terms of $P$ and $R$ is

•  $I=\left(\frac{P}{R}\right)^2$  

•  $I=\sqrt{\frac{P}{R}}$  

•  $I=\left(P-R\right)^2$  

•  $I=\sqrt{P-R}$