Concept explainers
To find : the explicit formula to represent the amount of money left on the card as an arithmetic sequence and the value of the card after buying 12 lunches.
Answer to Problem 37PPE
Explicit formula:
The value of the card after buying 12 lunches is $11
Explanation of Solution
Given sequence: We have a cafeteria card $50. After we buy lunch on Monday, its value is $46.75and after we buy lunch on Tuesday, its value is $43.50.
Calculation:
The sequence of the value of the cafeteria card is 50, 46.75, 43.50 ,….form an arithmetic sequence with first term
We know that the explicit formula for the arithmetic sequence with first term
The value of the card after buying n lunches is the ( n+ 1)th term of the sequence, so explicit formula to represent the amount of money left on the card after n lunches is
Now, the value of the card after buying 12 lunches =
Chapter 4 Solutions
High School Math 2015 Common Core Algebra 1 Student Edition Grade 8/9
Additional Math Textbook Solutions
College Algebra (10th Edition)
College Algebra with Modeling & Visualization (5th Edition)
Elementary and Intermediate Algebra
Linear Algebra with Applications (2-Download)
Differential Equations and Linear Algebra (4th Edition)
- Algebra and Trigonometry (6th Edition)AlgebraISBN:9780134463216Author:Robert F. BlitzerPublisher:PEARSONContemporary Abstract AlgebraAlgebraISBN:9781305657960Author:Joseph GallianPublisher:Cengage LearningLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning
- Algebra And Trigonometry (11th Edition)AlgebraISBN:9780135163078Author:Michael SullivanPublisher:PEARSONIntroduction to Linear Algebra, Fifth EditionAlgebraISBN:9780980232776Author:Gilbert StrangPublisher:Wellesley-Cambridge PressCollege Algebra (Collegiate Math)AlgebraISBN:9780077836344Author:Julie Miller, Donna GerkenPublisher:McGraw-Hill Education