Concept explainers
a)
the number of area codes that were possible before 1995.
a)
Answer to Problem 16E
The number of area codes that were possible before 1995 are 160codes.
Explanation of Solution
Given information :
Prior to 1995, area codes were in the format ABC,
In the given event,
The number of area codes that were possible before 1995 is given by,
So, the number of area codes that were possible before 1995 are 160codes .
b)
the number of area codes that were possible after the given change made.
b)
Answer to Problem 16E
The number of area codes that were possible after the given change made is 800codes .
Explanation of Solution
Given information :
Prior to 1995, area codes were in the format ABC,
In 1995, the restriction on the middle digit was removed, allowing any digit in that position.
In the given event,
The number of area codes that were possible after the given change made is given by,
So, the number of area codes that were possible after the given change made is 800codes .
Chapter 0 Solutions
Algebra 2
Additional Math Textbook Solutions
Algebra and Trigonometry (6th Edition)
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Using and Understanding Mathematics: A Quantitative Reasoning Approach (6th Edition)
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Pre-Algebra Student Edition
College Algebra with Modeling & Visualization (5th Edition)
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