Writing in Math Use the information on page 477 to explain how rational functions can be used when buying a group gift. Explain why only part of the graph of the rational function is meaningful in the context of the problem.
Graphing Rational Functions
150
1 student could
pay $150
125
GET READY for the Lesson
A group of students want to get their
favorite teacher, Mr. Salgado, a
retirement gift. They plan to get him a
gift certificate for a weekend package at
a lodge in a state park. The certificate
costs $150. If c represents the cost for
each student and s represents the
number of students, then c =
100
Cost (dollars)
75
25 students could
each pay $6.
150 students could
each pay $1.
50
25
150
S
0
25 50 75 100 125 150
S
Students
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