Answer :
The amount Adriano earns this month is $1150.
How much did Adriano earn?
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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