Amina recently moved and got a new job.  The quickest way to get to work is to take a freeway that charges a toll.  There are two options for paying the tolls.   Option A: No monthly fee, each trip on the tollway is $2.80. Option B: $30 monthly fee, each trip on the tollway is half-priced at $1.40. A-Write a linear model for Option A showing the total cost, C, in dollars, for x trips on the tollway. B-Write a linear model for Option B showing the total cost, C, in dollars, for x trips on the tollway.

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter5: Exponential And Logarithmic Functions
Section5.2: Applications Of Exponential Functions
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Construct and investigate the patterns and relationships present in linear, quadratic, cubic, exponential, logarithmic, rational, radical, piecewise, and absolute value functions.


1- Amina recently moved and got a new job.  The quickest way to get to work is to take a freeway that charges a toll.  There are two options for paying the tolls.  

Option A: No monthly fee, each trip on the tollway is $2.80.

Option B: $30 monthly fee, each trip on the tollway is half-priced at $1.40.

A-Write a linear model for Option A showing the total cost, C, in dollars, for x trips on the tollway.

B-Write a linear model for Option B showing the total cost, C, in dollars, for x trips on the tollway.

C-How many trips on the tollway are needed for Option B to be cheaper? Show your work or explain how you found this number.

D-If Amina plans to travel to and from work 5 times a week which option, should she purchase?  (assume a month has 4 weeks) Show your work and explain in words why you choose the option that you choose. 

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