PRECALCULUS:GRAPHICAL,...-NASTA ED.
10th Edition
ISBN: 9780134672090
Author: Demana
Publisher: PEARSON
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Expert Solution & Answer
Chapter 7.1, Problem 57E
Solution
a.
To calculate: The number of miles that can Pedro drive in order to be charged the same amount by the two companies.
Pedro drives 300 miles and he would be charged $70 by either company.
Given Information:
The statement is “Company: A flat fee of $40 plus 10 cents a mile, Company B: A flat fee of
Calculation:
Consider the given statements,
Suppose that the number of miles drive by Pedro is
Convert the given statements to in equation form.
Company: A flat fee of $40 plus 10 cents a mile.
A flat fee of
Now solve both equation by equating each other to equal.
Now, find the value of
Therefore, Pedro drives 300 miles he would be charged $70 by either company.
b.
To determine: The reason to choose one plan over the other by Pedro.
Pedro will choose plan due the slow rate per mile.
Given Information:
The statement is “Give reasons why Pedro might choose one plan over the other, explain.”
Calculation:
Consider the given statements,
Refer both the equation.
And,
It can be observed that after 300 mile, the second equation will charged more after 300 mile then equation 1.
If Pedro was certain that he was going to be driving at least 300 miles, he should choose Plan A since the charge per mile is less.
Therefore, Pedro will choose company A.
Chapter 7 Solutions
PRECALCULUS:GRAPHICAL,...-NASTA ED.
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