Unit 7 Review (Numbers and their Opposites)

If there is a movement from 3 to -3 on the number line, what is the distance of the movement?

• -|6|

• |0|

• |-3|

• |-6|

Given the inequalities -10 < 7 and 5 > -12, which of these statements is correct regarding the numbers in the inequalities?

• Of the four numbers, -12 is the farthest to the right on a number line.

• Of the four numbers, -12 is the farthest to the left on a number line.

• Of the four numbers, -10 is the farthest to the right on a number line.

• Of the four numbers, -10 is the farthest to the left on a number line.

• Chicago, Illinois

• Syracuse, New York

A marine biologist is studying ocean animals and has recorded the current depths of some of those animals.

The marine biologist has submerged a camera to a depth of -61.5 feet below sea level. He claims that the camera is farther away from sea level than any of the ocean animals. Which ocean animals prove the marine biologist's claim is FALSE?

• Starfish

• Nurse Shark

• Stingray

• Barracuda

• Lobster

Chloe claims that Point A = -6 and Point B = 1

Which of the following statements provide support for Chloe's claim? Select ALL that apply

• A < 0 because A is to the left of zero

• A > 0 because A is to the left of zero

• A < B because B is to the left of A

• A < B because A is to the left of B

• B > 0 because B is to the right of zero

The temperature at 2:00 pm was 12 degrees. By midnight, the temperature had dropped 20 degrees. What was the temperature at midnight?

• -20 degrees

• -12 degrees

• -8 degrees

• 0 degrees

Gary received a letter from his bank. The letter said the balance of Gary's checking account was -35 dollars.

What does the value -35 mean in this context?

• Gary has $35 in his account

• Gary has $35 in his account and owes the bank $35.

• Gary has no money in his account and owes the bank $35.

• Gary has no money in his account but the bank owes him $35.

Leah has a bank account with $300 in it. Over the next year, she visits the bank 14 times and either deposits $25 or withdraws $15 from the account at each visit. Let d represent the number of deposits. At the end of the year, Leah's account balance is $330. Which statements are true? Select THREE that apply.

• The bank balance changes from $300 to $330, which is a difference of $30. Since d represents the number of deposits, that means that there were 14 - d withdrawals.

• Each deposit is worth 25 dollars, each withdrawal is worth -15 dollars, and the sum all of the changes to the account balance is 30. The equation that represents this is 25d + (-15)(14-d) =30

• Each deposit is worth 25 dollars, each withdrawal is worth 15 dollars, and the sum all of the changes to the account balance is 30. The equation that represents this is 25d + (15)(14-d) = 30

• There were 6 deposits 0f $25 and 8 withdrawals of $15.

• There were 3 deposits of $25 and 3 withdrawals of $15

Which letter on the number line best identifies the location of -4?

• f

• g

• h

• i