Chapter 1 Test - Equations

Solve. 42 = 7x

• x = 7

• x = 14

• x = 6

• x = 21

 $Solve.\ \frac{1}{4}\left(n-6\right)=\frac{1}{4}n-\frac{3}{2}$  

•  $n=15$  

•  $n=-15$  

• No solution is possible

• Infinite amount of solutions

 $For\ the\ fomula\ PV=nRT,\ solve\ for\ T.$  

•  $T=\frac{PR}{nV}$  

•  $T=\frac{PV}{nR}$  

•  $T=\frac{nV}{PR}$  

• Answer not given

Find the value of x. Then find the angle measures of the polygon:

• x=25; unknown angles are 75° and 45°

• x=75; unknown angles are 60° and 25°

• x=25; unknown angles are 60° and 75°

• Answer not given

 $Solve.\ t+3t-7=4t-7$  

• No solution possible

• Infinite amount of solutions

•  $t=0$  

•  $t=\frac{7}{4}$  

 $Solve\ for\ y.\ \ \ \ \ \ \ 1.5x-3y=6$  

•  $y=\ 5x-2$  

•  $y=.5x+2$  

•  $y=.5x-2$  

• Answer not given

Solve. y - 12 = 9

• y = 2

• y = 21

• y = 3

• y = -3

 $Solve.\ \ \frac{4}{3}w\ -\ 12\ =\ \frac{2}{3}w$  

•  $w=8$  

•  $w=18$  

•  $w=24$  

• Answer not given

 $For\ formula\ Z=sL,\ solve\ for\ s.$  

•  $s=ZL$  

•  $s=\frac{L}{Z}$  

•  $s=\frac{Z}{L}$  

• Answer not given

 $Solve\ for\ y.\ \ \ \ \ \ \ \ \frac{1}{4}y-2x=5$  

•  $y=4x$  

•  $y=8x-20$  

•  $y=8x-5$  

• Answer not given