The music website 'Totally Tunes' charges for song downloads according to the graph below. Write an equation to model this situation. Totally Tunes 17 16 15 13 12 11 10 1 1 2 3 4 7 Numberof Songs Cost ($)

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter1: Equations And Graphs
Section1.3: Lines
Problem 92E
icon
Related questions
icon
Concept explainers
Question
3. The music website 'Totally Tunes' charges for song downloads according
to the graph below. Write an equation to model this situation.
Totally Tunes
17
16
15
14
13
12
11
10
2
1
1
2
3
4
5
6
7
Number of Songs
Solution : Using the general formula C = (rate per item)n + (fixed amount)
We must determine the fixed amount: it is the vertical intercept on the graph,
which is 7.
Then we must determine the rate per song by calculating the slope of the line,
which is 1.50$/song
*(choose two points on the line and determine rise and run, slope = un
rise )
So the equation is :
C = (rate per item)n + (fixed amount)
C = 1.50n + 7
Cost ($)
Transcribed Image Text:3. The music website 'Totally Tunes' charges for song downloads according to the graph below. Write an equation to model this situation. Totally Tunes 17 16 15 14 13 12 11 10 2 1 1 2 3 4 5 6 7 Number of Songs Solution : Using the general formula C = (rate per item)n + (fixed amount) We must determine the fixed amount: it is the vertical intercept on the graph, which is 7. Then we must determine the rate per song by calculating the slope of the line, which is 1.50$/song *(choose two points on the line and determine rise and run, slope = un rise ) So the equation is : C = (rate per item)n + (fixed amount) C = 1.50n + 7 Cost ($)
Expert Solution
steps

Step by step

Solved in 3 steps

Blurred answer
Knowledge Booster
Points, Lines and Planes
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, advanced-math and related others by exploring similar questions and additional content below.
Recommended textbooks for you
College Algebra
College Algebra
Algebra
ISBN:
9781305115545
Author:
James Stewart, Lothar Redlin, Saleem Watson
Publisher:
Cengage Learning
Algebra and Trigonometry (MindTap Course List)
Algebra and Trigonometry (MindTap Course List)
Algebra
ISBN:
9781305071742
Author:
James Stewart, Lothar Redlin, Saleem Watson
Publisher:
Cengage Learning
Holt Mcdougal Larson Pre-algebra: Student Edition…
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt
Algebra for College Students
Algebra for College Students
Algebra
ISBN:
9781285195780
Author:
Jerome E. Kaufmann, Karen L. Schwitters
Publisher:
Cengage Learning