MATHEMATICS · Single correct · AP · Calculus AB · Contextual Applications of Differentiation · Contextual Applications of Differentiation
Problem
A firm faces the price–demand relation p(q)=100−0.2q, where p is the price (in dollars) and q is the number of units sold. Revenue is R(q)=qp(q). What is the marginal revenue, in dollars per unit, when q=150?
(a) 70
(b) 40
(c) −30
(d) 60