What is 10.5% commission of $85,000
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Answer:
A) The linear relation between price and demand is:
The revenue R is:
B) The profit functionP is:
C) The largest monthly profit is obtained with a log-on fee of $2.5 per month. This corresponds to a profit of $3407.5.
Step-by-step explanation:
We have a site where the number of log-ons depends on our monthly fee. A linear relation is established between the price (log-on fee) and the number of log-ons.
We have two points for this linear relationship:
- At price x=3, the demand is d=1100.
- At price x=2.5, the demand is d=1375.
We will model the relation:
We can calculate the slope m as:
Then, replacing one point in the linear equation, we can calculate the intercept b:
Then, the linear relation between demand and price is:
The revenue R can be expressed as the multiplication of the price and the demand:
If we have a fixed cost of $30 per month, the profit P is:
We can maximize the profit by deriving the profit function and making it equal to zero.
This corresponds to a profit of: