Concept explainers
a.
To find: the independent and dependent variable.
a.
Answer to Problem 18E
Independent variable: x
Dependent variable: y
Explanation of Solution
Given:
The function
Here, the independent variable is x and the dependent variable is y as the cost of taxi ride depends on the number of miles travelled.
b.
To find: domain and range of function.
b.
Answer to Problem 18E
Domain:
Range:
Explanation of Solution
Given:
The function
Since money is sufficient to travel at most 20 miles in taxi.
So, the domain of the given function is:
The given function
The smallest output value of this function is achieved at the smallest input value of domain
First substitute
Now substitute
Thus, the range is
Chapter 3 Solutions
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