Concept explainers
To choose: a variable for the present age of a radio station and to write an equation which represents the information regarding the age at a particular day in terms of the present age
Answer to Problem 26WE
The variable for present age of the radio station is a
The equation representing the given information is
Explanation of Solution
Given Information:
A radio station has been on air for 13 days nine days ago.
Formula Used:
The following approach is used to obtain the equation connecting the present age and past age of the radio station
a. Choosing a variable for the present age of the radio station
b. Representing the given information that the station was having an age of a given number of days before a given time slot
The variable chosen can be assigned in the above expression to get the equation of age of radio station
Calculation:
Let the present age of the radio station be represented by the variable “ a ”
Based on this, the age before nine days is given by a- 9. Now, since the radio station has been on air for 13 days before the nine days, the equation for the ages can be written as,
Chapter 1 Solutions
Algebra: Structure And Method, Book 1
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