Please Help I am completely confused on how to do this. Thanks: An apple orchard produces annual revenue of $60 per tree when planted with 100 trees. Because of overcrowding, the annual revenue per tree is reduced by $0.50 for each additional tree planted.

REVENUE

Assuming http://webwork.math.ttu.edu/webwork2...0ddd72c201.png, write an equation for the revenue produced by http://webwork.math.ttu.edu/webwork2...dd0b8b8e91.png trees:

http://webwork.math.ttu.edu/webwork2...17760d0aa1.png

How many trees should be planted to maximize the revenue from the orchard?

Now suppose that the cost of maintaining each tree is $5 per year.

Write the profit function in terms of http://webwork.math.ttu.edu/webwork2...dd0b8b8e91.png:

http://webwork.math.ttu.edu/webwork2...e31d24ae81.png

How many trees should be planted to maximize the profit from the orchard?