Concept explainers
To determine the better plan.
Answer to Problem 6CYP
Plan Y is better for message above 135 and plan X is better for messages below 135.
Explanation of Solution
Given information:
Plan X is $39.95 per month for unlimited calls and $0.05 per message.
Plan Y is $44 per month and $0.02 per message.
Let us determine the equation for total cost for both the plans.
Let us take the number of messages be x and total cost be y.
Hence the equation for plan X is
The equation for plan Y is
Plot the graph of the equations,
Red line represents plan X and blue line is plan Y.
Here we may observe that the both plans cost same at 135 messages.
Plan Y is better for message above 135 and plan X is better for messages below 135.
Chapter 3 Solutions
Geometry, Student Edition
Additional Math Textbook Solutions
Using and Understanding Mathematics: A Quantitative Reasoning Approach (6th Edition)
Thinking Mathematically (6th Edition)
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
University Calculus: Early Transcendentals (4th Edition)
A First Course in Probability (10th Edition)
- Elementary Geometry For College Students, 7eGeometryISBN:9781337614085Author:Alexander, Daniel C.; Koeberlein, Geralyn M.Publisher:Cengage,Elementary Geometry for College StudentsGeometryISBN:9781285195698Author:Daniel C. Alexander, Geralyn M. KoeberleinPublisher:Cengage Learning