Answer:
$40
Explanation:
Profit made is the difference between revenue earned and cost incurred by an entity.
Marginal profit is thus a difference between the additional sales during the added time and the additional cost incurred.
As such, for the local restaurant;
Profit earned during the last hour given that for each additional hour is ​$404 and the additional revenue​ (the marginal​ revenue) during the last hour is ​$444​
= $444 - $404
= $40