A bookstore costs $90 a day to keep open, and spends $12 for each book it sells. the store charges $18 for each book it sells. I f n represents the number of books sold, which equation represents the revenue function for this bookstore?
2 answers:
Total Cost in a day is
. Profit function is
. And the revenue function is
. In a day, bookstore must sell at least 15 books, because of 6n-90=0, in order to make profit.
Answer:
Step-by-step explanation:
Let
R------> the revenue function
n------> the number of books sold per day
we know that
In this problem
-----> represent the profit
-----> represent the cost
so
The revenue is equal to the profit minus the cost
------> equation that represent the revenue function
Simplify
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