Answer
The company lost $4000
Work Step by Step
Plug 300 into both equations
R(300) = 50(300) = 15000
C(300) = 1000 + 30(300) = 19000
R(300) - C(300) = 15000 - 19000 = -4000
The company lost $4000 by selling 300 radios. This is because costs are higher than revenue.