3. The monopolist faces a demand curve given by D (p) = 10p-3. Its cost function is c (y) = 2y. What is its optimal level of output and price?.

-> R (y) = (10y - 3) 2y = 20y² - 6y - > R' (y) = 40y - 6 Optimal level of output when R' (y) = C' (y) - > 40y - 6 = 2 = > 40y = 8 = > y = 8/40 =.2 by using differential calculus w got its optimal level and price