
(a)
To find: Theformula for
(a)

Answer to Problem 50RE
The formula that describes the cab charges is
Explanation of Solution
Given information:The given cab charges for first mile is
Calculation:
The function that can be used to describe the cab charges $3.20 for a mile and $1.35 for each additional mile is:
As the given interval is
The function that describes the fare is,
The cab charges for first mile is
Therefore, the formula that describes the cab charges is
(b)
To graph:The function in part (a) and write the values for which the function is discontinuous.
(b)

Explanation of Solution
Given information:
The given cab charges for first mile is
Graph:
From part (a), the function that describes the cab charges is:
To plot the graph of function, follow the steps given below.
Press “ON” button to open the calculator. Press
Set the windows at
Now, press
Figure (1)
Interpretation:From the graph it can be observed that the function is discontinuous for the integer values of xas
Chapter 2 Solutions
Calculus: Graphical, Numerical, Algebraic
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