Business Calculus help! (revenue, profit, etc.)?

Miss Thang

New member
The thing that gives me stuck is that I don't know how to work with both sets of supply and demand.
Any help is appreciated!

You operate a gaming Web site, www.mudbeast.net, where users must pay a small fee to log on. When you charged $3 the demand was 1080 log-ons per month. When you lowered the price to $2.50, the demand increased to 1350 log-ons per month.

(a) Construct a linear demand function for your Web site and hence obtain the monthly revenue R as a function of the log-on fee x.
R(x) =

(b) Your Internet provider charges you a monthly fee of $20 to maintain your site. Express your monthly profit P as a function of the log-on fee x. HINT [See Example 4.]
P(x) =

Determine the log-on fee you should charge to obtain the largest possible monthly profit.
x = $

What is the largest possible monthly profit?
$
 
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