Concept explainers
a.
To write the variable expression for the tire tread depth after
a.
Answer to Problem 29E
The variable expression is
The table showing the tire tread depth after 1, 2, and 3 years is drawn below:
Explanation of Solution
Given information :
The tread depth of the tires of family’s new car is
Calculation :
The variable expression for the tire tread depth after
The table showing the tire tread depth after 1, 2, and 3 years is drawn below:
Hence,
The variable expression is
b.
To extend the table and find the approximate number of years the car can be driven before the tires need to be replaced.
b.
Answer to Problem 29E
The extended table is:
The approximate number of years to replace the tires is 7 years.
Explanation of Solution
Given information :
The tire should be replaced when the tread depth is
Calculation :
The extension of the table from part (a) is
From the table it can be observed that the tires need to be replaced after approximately 7 years.
Hence,
The approximate number of years to replace the tires is 7 years.
Chapter 5 Solutions
Holt Mcdougal Larson Pre-algebra: Common Core Practice Workbook
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