ANSWER
The subscription price of $45 provides the maximum revenue for the company
Step-by-step explanation
When the price is $
, the company sells
quantities.
The total revenue accrued


When the price increases to $
the quantity sold will decrease by 200 magazines which is

The total revenue accrued

dollars
When the price increases to $
the quantity sold will decrease by 200 magazines again which is

The total revenue accrued

dollars
When the price increases to $
the quantity sold will decrease by 200 magazines which is

The total revenue accrued

dollars
Hence a subscription price of $45 provides the maximum revenue for the company.