Acme finds that its monthly revenue, in dollars, from the sale of x carry-on suitcases is $\displaystyle {0.004}{x}^{{3}}-{0.7}{x}^{{2}}+{130}{x}$. Currently Acme is selling 26 carry-on suitcases monthly.

a) What is the current monthly revenue?
Select an answer dollars per year dollars per suitcase dollars per day dollars per month
b) How much would revenue increase if sales increased from 26 to 28 suitcases?
Select an answer dollars per suitcase dollars per day dollars per month dollars per year
c) What is the marginal revenue when 26 suitcases are sold?
Select an answer dollars per year dollars per day dollars per month dollars per suitcase
d) Estimate the revenue resulting from selling 27 suitcases per month.
Select an answer dollars per suitcase dollars per month dollars per year dollars per day