ANSWER
The subscription price of $45 provides the maximum revenue for the company
EXPLANATION
When the price is $[tex]40[/tex], the company sells [tex]2000[/tex] quantities.
The total revenue accrued
[tex]=40\times2000[/tex]
[tex]=$80,000[/tex]
When the price increases to $[tex]45[/tex] the quantity sold will decrease by 200 magazines which is [tex]2000-200=1800[/tex]
The total revenue accrued
[tex]=45\times 1800[/tex]
[tex]=81000[/tex] dollars
When the price increases to $[tex]50[/tex] the quantity sold will decrease by 200 magazines again which is [tex]1800-200=1600[/tex]
The total revenue accrued
[tex]=50\times 1600[/tex]
[tex]=80000[/tex] dollars
When the price increases to $[tex]55[/tex] the quantity sold will decrease by 200 magazines which is [tex]1600-200=1400[/tex]
The total revenue accrued
[tex]=55\times 1400[/tex]
[tex]=77000[/tex] dollars
Hence a subscription price of $45 provides the maximum revenue for the company.