Unit 1 Lesson 7 Review

The greatest ocean depth is at a depth of -35,836 feet. An unmanned research submarine dives from sea level to that depth in 17 equal steps. At what depth is the submarine located after the first step?

• -35,853 feet

• -2,108

Which expression is undefined?

• 0 divided by 6

• 6 divided by 0

 $\left(-81\right)\div\left(-9\right)$  What is the value of the following expression?

• 9

• -9

 $25\div\left(-5\right)$  What is the value of the following expression?

• 5

• -5

 $\frac{-1,600}{12}$  Which question can be answered by the expression below?

• Lynn withdrew $1,600 from her bank account last year. What was the average change in her account each month?

• A submarine dives 1,600 meters below the ocean's surface each hour. How far has the submarine traveled after 12 hours?

 $\frac{-2}{3}$  Select all of the fraction that are equivalent to

•  $\frac{-3}{-2}$  

•  $\frac{-3}{2}$  

•  $-\ \frac{2}{3}$  

•  $\frac{2}{-3}$  

 $\frac{5}{6}$  Select all values that are equal to

•  $\frac{-5}{-6}$  

•  $\frac{-5}{6}$  

• - ( $\frac{5}{-6}$  )

• -( $\frac{-5}{-6}$  )