Concept explainers
To write an expression to find the cost for
Answer to Problem 3CYP
Expression to find the cost for
Table showing the cost is
Number of calls (x) | Cost during month ($) |
40 | 25 |
50 | 27.5 |
60 | 30 |
70 | 32.5 |
Explanation of Solution
Given information: A company offers a plan where they charge
Formula Used:
Slope intercept form of line is
Calculation:
Given that a company offers a plan where they charge
Let the number of calls made or received be
Thus, the equation is given as
Now, number of calls made or received during one month,
Hence, the expression will become
On evaluating, cost is
Thus, cost for
When
When
When
Thus, the table is
Number of calls (x) | Cost during month ($) |
40 | 25 |
50 | 27.5 |
60 | 30 |
70 | 32.5 |
Conclusion:
Hence, the expression to find the cost for
Chapter 1 Solutions
Pre-Algebra, Student Edition
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