a.
To identify: The inequality if normally it takes 500mi trip, averaging 45mi/h. Increase the rate so that at least one hour could be saved.
The required inequality is
Given information:
The given statement is: Normally it takes 500mi trip, averaging 45mi/h. Increase the rate so that at least one hour could be saved.
Explanation:
Length of the trip is
Rate of the travel is
Let a is the increased rate.
Substitute
Here saving time should be at least 1 hour.
b.
To solve: The inequality
The rate should be increased at least 4.5mi/hr.
Given information:
The given inequality is
Explanation:
Consider the inequality:
Hence, the rate should be increased at least 4.5mi/hr.
Chapter 8 Solutions
High School Math 2015 Common Core Algebra 2 Student Edition Grades 10/11
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