AnswersEF Math 12 1st Nine WeeksDomain and Range

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21
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Solve the equation. Then check your solution. = a + a. c. b. d. Please select the best answer from the choices provided

Question illustration
A
A
B
B
C
C
D
D
22
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Solve the problem. A repair company's charge for repairing a certain type of copy machine fits the model where y is the number of dollars charged and x is the number of minutes the repair person is on the job. How many minutes would it take for the cost of repair to reach $130? (Round to the nearest minute.)

Question illustration
A
203
B
287
C
134
D
13
23

Give the domain and range.

Question illustration
A
domain: {1, 2, 3}, range: {1, 0, 1}
B
domain: {–1, 0, 1}, range: {1, 2, 3}
C
domain: {1, 0, 1}, range: {1, 2, 3}
D
domain: {1, 2, 3}, range: {–1, 0, 1}
24

Write the relation as a set of ordered pairs.

Question illustration
A
ordered pairs: {(1, 2), (0, –1), (–3, 2)}
B
ordered pairs: {(1, –2), (–1, 0), (–3, 2)}
C
ordered pairs: {(–2, 1), (–1, 0), (2, –3)}
D
ordered pairs: {(–2, 1), (0, –1), (2, –3)}
25

Give the domain and range.

A
A
B
B
C
C
D
D
26

Solve the problem. The cost of having a package delivered has a base fee of $9.70. Every pound over 5 lbs cost an additional $0.46 per pound. Write a linear model that represents the cost, C, for the total weight, w, in pounds of the package. Assume w 5 lbs.

Question illustration
A
C = 9.7w + 0.46
B
C = 0.46w + 12
C
C = 0.46w + 9.7
D
C = 0.46(w - 5) + 9.7
27

Give the domain and range.

Question illustration
A
domain: {–2, 0, 2}, range: {4, 6, 8}
B
domain: {0, 2}, range: {6, 8}
C
domain: {4, 6, 8}, range: {–2, 0, 2}
D
domain: { 6, 8}, range: {0, 2}
28

A photographer charges a sitting fee of $15, and charges $4 for each 5-in. by 7 in.photograph the customer orders. The linear function can be used to calculate the customer’s cost (c) based on the number of photographs (n) purchased. Determine the cost of 6 photographs.

Question illustration
A
$24
B
$39
C
$114
D
$25
29

Look at the following graph of the given equation. Determine whether the equation is a function. Explain why or why not.

Question illustration
Answer not available
30

Write the relation as a set of ordered pairs.

A
A
B
B
C
C
D
D
31

If you work for an hourly wage, your gross pay is a function of the number of hours that you work. What is the independent variable? What is the dependent variable?

A
The independent variable is the gross pay. The dependent variable is the hourly wage.
B
The independent variable is the gross pay. The dependent variable is the number of hours.
C
The independent variable is the number of hours. The dependent variable is the gross pay.
D
The independent variable is the hourly wage. The dependent variable is the gross pay.
32

For which independent value do the equations generate the same dependent value?

Question illustration
A
2
B
3
C
-2
D
none

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