Concept explainers
(a)
To identify: the independent and dependent variables.
(a)
Answer to Problem 9CYU
The required function is
Explanation of Solution
Given:
Spent $215 for family portrait
The portrait package costs $125
photographer charges $15 per person
Calculation:
Let c be the total cost and s be the total number of persons in the portrait
Since the total cost depends on the number of persons in the portrait, total cost c be the dependent variable and total number of persons s be the independent variable.
Words: Total cost = $125 + sitting fee per person times number of persons
Function:
Conclusion: Therefore, the required function is
(b)
To find: the number of people in the portrait.
(b)
Answer to Problem 9CYU
The total number of persons in the portrait is 6.
Explanation of Solution
Calculation:
Need to find the number of people in the portrait using above equation
Consider the equation
Substitute
Conclusion: Therefore, the total number of persons in the portrait is 6.
Chapter 8 Solutions
Pre-Algebra Student Edition
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