Piecewise Defined Functions Answers

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What is the domain of the function graphed below?

Question illustration
A
mc021-2.jpg
Option A
B
mc021-3.jpg
Option B
C
mc021-4.jpg
Option C
D
all real numbers
10

Which graph represents the following piecewise defined function?

Question illustration
A
mc006-2.jpg
Option A
B
mc006-3.jpg
Option B
C
mc006-4.jpg
Option C
D
mc006-5.jpg
Option D
11

How does the second passage develop Kaku’s idea that humans have become active choreographers of nature?

A
by saying that people can now use DNA to reconstruct other humans
B
by saying that people can now read DNA to understand individual characteristics
C
by saying that people can now examine a single cell to discover what DNA is
D
by saying that people can now use DNA to choreograph nature
12

Which of the following statements is NOT accurate of blood alcohol content (BAC)?

A
BAC is used to determine number of beverages consumed.
B
BAC varies from one individual to the next.
C
BAC is used to determine level of intoxication.
D
BAC is the concentration of alcohol in a person's blood.
13

Which uses of soil are discussed in the video? Check all that apply.as a habitat for Smokey (the) bearas a way to clean and store airas a place for plants and crops to growas a material to clean and smooth skinas a building material for homes and buildings as a way to prohibit public access to forests

A
as a habitat for Smokey (the) bear
B
as a way to clean and store air
C
as a place for plants and crops to grow
D
as a material to clean and smooth skin
E
as a building material for homes and buildings
F
as a way to prohibit public access to forests
14

Identify the important ideas about DNA. Check all of the central ideas from the passage.

A
DNA fingerprinting will become obsolete.
B
DNA testing will become more sophisticated.
C
DNA sequencing can be done from dandruff.
D
DNA can reveal all of a person’s characteristics.
E
DNA fingerprinting will keep improving.
15

Which statement is true based on the data in the table?

A
The United States uses more land to grow crops than to maintain forests.
B
The United States uses more land for parks and wildlife than for forests.
C
The United States uses more land for parks and forests than for urban areas.
D
The United States uses more land for urban areas than for grasslands and ranges.
19

Which of the following statements is NOT true about alcohol?

A
Alcohol content, which can be found on the label, is expressed as a percent.
B
Alcohol is a depressant, which means it speeds up the nervous system.
C
Before alcohol is metabolized in the body, it is an active brain drug and a cellular toxin.
D
Alcohol is created when grains, fruits, or vegetables are fermented.

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