(1 pt) The following table gives the cost and revenue, in dollars, for different

production levels, q. Answer the questions below.
q 0 100 200 300 400 500 600
R(q) 0 540 1080 1620 2160 2700 3240
C(q) 650 915 985 1115 1270 1870 2605

At approximately what level of production q, is the profit maximized?
Round your answer to the nearest 100.
Answer: ___ units