A firm sells its output in two markets, domestic D and foreign F. The domestic demand is QD = 50 – 5 P, while the foreign demand for the firm’s product is P = 10 – 2 QF . Given this information, the total demand Q (where Q = QD + QF ) that this firm faces satisfies Answer P = 60 – 8 Q Q = 55 – 5.5 P Q = 60 – 7 P none of the above.