Concept explainers
The greatest number of hours spends on walking dogs.
Answer to Problem 56PPE
The time of walking dogs is maximum
Explanation of Solution
Given information:
Tutoring earned
Calculation:
Here,
Then the problem can be stated as: Product of earned money by tutoring per hour and time of tutoring in hour plus product of earned money by walking dogs per hour and time of walking dogs in hour is at least
Mathematically,
Solve the inequality:
Distributive law
Simplify
Subtract 120 from each side
Simplify
Here the maximum value of
Therefore, the time of walking dogs is maximum
Chapter 3 Solutions
High School Math 2015 Common Core Algebra 1 Student Edition Grade 8/9
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