Marginal Revenue The management of Ditton Industries has determined that the daily marginal revenue function associated

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Marginal Revenue The management of Ditton Industries has
determined that the daily marginal revenue function associated with
selling x units of their deluxe toaster ovens is given by the
following, where R'(x) is measured in dollars/unit.
R'(x) = −0.1x + 40
(a)
Find the daily total revenue realized from the sale of 190 units of
the toaster oven.
$

(b)
Find the additional revenue realized when the production (and
sales) level is increased from 190 to 290 units.