An imperfectly competitive firm has the following demand curve: Q=100−2P. What is marginal revenue (MR)? Notes: Answer with an equation like MR=xxxxx. Use Q for output, and don't use space between numbers and signs. An imperfectly competitive firm has the following total cost curve: C=48+2Q. What is marginal cost? Notes: Answer with Arabic number only without unit. For the above imperfectly competitive firm, what is an equation for average cost (AC)? Notes: Answer with an equation like AC=xxxxx. Use Q for output, and don't use space between numbers and signs. Use fraction and write it like 10/Q. For the above firm imperfectly competitive firm, what is fixed cost? Notes: Answer with Arabic number only without unit.