review nath

Solve the proportion:

• 4

• 14

• 8

• 10

Solve for x.  $-4x+7=15$  

•  $x=-32$  

•  $x=2$  

•  $x=5.5$  

•  $x=-2$  

Tim is bringing donuts to work as a treat for his co-workers. He buys 12 donuts for $9.96. How much does each donut cost?

• $8.30

• $0.83

• $0.13

• $119.52

What is  $\left|43.65\right|$  ?

•  $43.65$  

•  $-43.65$  

•  $-\left|-43.65\right|$  

What is the mean?

• 6

• 5

• 7

• 8

The measure of an angle is $34\degree$ . What is the measure of its supplementry angle?

• 180

• 124

• 56

• 146

Simplify the expression using exponents.

• 81⁸

• 9¹⁵

• 9⁸

• 81¹⁵

Using exponents, what is the simplified form of this expression?

• 5⁹

• 1⁵

• 5¹⁴

• 5⁵

What is the value of 18⁰?

• 18

• 0

• 1

• -18

How do you write the standard number 0.00095 in scientific notation?

• 9.5 x 10^-3

• 9.5 x 10^-5

• 9.5 x 10^-4

• 9.5 x 10^-6