The amount Adriano earns this month is $1150.
The amount Adriano would receive would increase by the number of new subscribers and reduce by the number of subscribers who cancel.
Total amount Adriano earns this month = (number of subscribers x subscription fee) + (number of new subscribers x subscription fee) - (number of people who cancelled x subscription fee)
(200 x $5) + (40 x $5) - (10 x $5)
$1000 + $200 - $50 = $1150
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