Concept explainers
To write:
An equation using function notation that gives the monthly cable cost of basic cable TV as a function of t .
Answer to Problem 10E
The function
Explanation of Solution
Given:
The monthly average cost of basic cable TV was $9.73 in 1985 and has increased by about $1.35 each year since then.
Concepts used:
The equation of a line in slope-intercept form is
Calculation:
Let t represent the number of years since 1985.
We know that one year equals 12 months, so the number of months in terms of t would be
We have been given one point on a line
To write our function, we will substitute the value of slope and the y -intercept
Therefore, the function
Chapter 8 Solutions
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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