p(x) is the unit price at which all x units will be sold.

Last updated: 7/18/2022

p(x) is the unit price at which all x units will be sold. Assume p(x) is in dollars. Use marginal revenue to estimate the revenue derived from the sale of the 21st unit. What is the actual revenue obtained from the sale of the 21st unit? p(x) = -x² - 15x + 3500