Math 8 Review

Find the value of m:

4 ( m + 3 ) = -24

• m = - 9

• m = 7

• m = -6

• m = 9

Find the value of x:

3x - 6 = 6x + 12

• x = -2

• x = -6

• x = 3

• x = 6

Which of the follow in NOT an irrational number?

• 3.4353859246......

•  $\sqrt{49}$  

•  $\pi$  

•  $\sqrt{20}$  

Simplify:

 $\left(6\ x\ 10^{11}\right)\left(9\ x\ 10^5\right)$  

•  $54\ x\ 10^{16}$  

•  $5.4\ x\ 10^{17}$  

•  $5.4\ x\ 10^6$  

•  $1.5\ x\ 10^{16}$  

How many solutions does the equation have?

2x - 6 = 2x + 21

• No Solution

• One Solution

• Two Solutions

• Infinite Solutions

Simplify: -4x⁰

• x

• 0

• 1

• -4

 $\left(3c^2\right)^3$  

•  $27c^5$  

•  $9c^6$  

•  $27c^6$  

•  $6c^6$  

Simplify:

 $\left(3y^{-2}\right)\left(2y^4\right)$  

•  $6y^2$  

•  $5y^{-8}$  

•  $5y^6$  

•  $\frac{6y^4}{y^2}$  

Simplify:

 $\frac{30x^6}{6x}$  

•  $24x^5$  

•  $36x^6$  

•  $5x^7$  

•  $5x^5$  

Simplify:

 $\left(2.8\ x\ 10^6\right)\ +\ \left(3.3\ x\ 10^5\right)$  

•  $1.1\ x\ 10^5$  

•  $3.13\ x\ 10^{11}$  

•  $4.1\ x\ 10^6$  

•  $3.13\ x\ 10^6$