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Axia College Material
Appendix E
Fueling Up
Motorists often complain about rising gas prices. Some motorists purchase fuelefficient vehicles and
participate in trip reduction plans, such as carpooling and using alternative transportation. Other drivers
try to drive only when necessary.
Application Practice
Answer the following questions. Use Equation Editor to write mathematical expressions and equations.
First, save this file to your hard drive by selecting
Save As
from the File
menu. Click the white space
below each question to maintain proper formatting.
1.
Imagine you are at a gas station filling your tank with gas. The function
C
(
g
) represents the cost
C
of filling up the gas tank with
g
gallons. Given the equation
)
(
03
.
3
)
(
g
g
C
=
a.
What does the number 3.03 represent?
It represents the cost of a gallon of gas.
b.
Find
C
(2).
(
29
)
2
(
03
.
3
2
=
C
=
(
29
06
.
6
2
=
C
c.
Find
C
(9).
(
29
(
29
(
29
27
.
27
9
9
03
.
3
9
=
=
=
C
C
d.
For the average motorist, name one value for
g
that would be inappropriate for this
function’s purpose. Explain why you chose that number.
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 Spring '10
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