Study Guide Exam3: Functions and Models

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Exam-3: Functions and Models

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The graph shows the attendance at a hockey game, and the rate at which the fans enter

and exit the arena.

#1

Since the downward slope of segment 6 occurs before the large downward slope at the

end of the graph, it can be inferred that a small number of fans left before the end of

the game. Therefore, this statement is correct.

Study Guide Exam3: Functions and Models

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Janelle alternates between running and walking. Janelle began by running, then slowed to

a walk, stopped, and then began running again. Which graph would represent this

situation?

#2

Study Guide Exam3: Functions and Models

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A plane takes off and climbs steadily for 15 minutes until it reaches 35,000 feet. It

travels at that altitude for 2 hours until it begins to descend to land, which it takes 15

minutes at a constant rate. Draw a graph of the situation.

2 hours = 120 min +15 min = 135

(15 minutes, 35,000 feet)

(135 minutes, 35,000 feet)

(150 minutes, 0 feet)

#3

Note: The ascending segment should be a straight-line segment that is increasing to a

height of 35,000 feet for 15 minutes.

The second segment should be horizontal for 2 hours.

The third segment should be a straight-line segment that is decreasing from a height of

35,000 feet for 15 minutes.

(x,y)

Study Guide Exam3: Functions and Models

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Give the domain and range of each relation and interpret them in context. State the

corresponding outputs for the given inputs in context and explain whether the relation is

a function.

The relation represents the number of books sold and the price for the corresponding

number of books.

#4

Study Guide Exam3: Functions and Models

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#13

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#14

* (Use the same variable as in f of m)

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#15

* (Use the same variable as in f of p)

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#16

* (Use the same variable as in f of b)

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#17

Solve the equation for x.

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