Concept explainers
(a)
The explicit formula to show the remaining value on the card as arithmetic sequence is to be written.
(a)
Answer to Problem 4P
The explicit formula is,
Explanation of Solution
Given data:
Starting value of subway pass =
The value of the pass after one ride =
The value of the pass after two rides =
The value of the pass after three rides =
The
The equation (1) represents the explicit formula to calculate the remaining values on the cards.
The value of the pass after
From the given data:
Plugin the values in equation (1)
(b)
The number of rides taken with
(b)
Answer to Problem 4P
The number of rides is,
Explanation of Solution
Given data:
The cost of one ride =
Total cost =
Therefore, number of rides becomes,
Chapter 4 Solutions
High School Math 2015 Common Core Algebra 1 Student Edition Grade 8/9
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