The Tables Below Give the Numbers of Some Species of Threatened

question 16

Multiple Choice

The tables below give the numbers of some species of threatened and endangered wildlife in the United States and in foreign countries in 2003. Let A represent the matrix that contains the number of each of these species in the United States in 2003 and B represent the matrix that contains the number of each of these species outside the United States in 2003. Find the matrix B - A. What do the negative entries in matrix B - A mean? ​
​United States ​Foreign ​ ​

• A)​ The negative entries tell us that that particular species is extinct.
• B)​ The negative entries tell us how many more endangered or threatened species are in foreign countries.
• C)​ The negative entries tell us that there are more endangered or threatened species in foreign countries.
• D)​ The negative entries tell us that that particular species is extinct.
• E)​ The negative entries tell us how many more endangered or threatened species are in the United States.

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Definitions:

Adjust

To change or modify something in order to achieve a desired result or fit a new situation.

Lasting Change

Enduring or permanent transformation in habits, behaviors, or circumstances that remains over time.

Track

A path or course laid out for running or racing, or the act of following or monitoring progress or developments.

Discard

To throw away or remove something unnecessary or unwanted.