For a certain manufacturer, the revenue obtained from the sale of q units of a product is given by r=209 -0.392
(a) How fast does r change with respect to q?
When q = 30. (b) find the relative rate of change of r, and (c) find the percentage rate of change of r.
(a) Determine the marginal-cost function. Select the correct choice below and fill in the answer box to complete your choice.
(Use integers or decimals for any numbers in the expression.)
O A
dr
da
OB
da
dr
