2250 + 6x = 16x 2250 = 16x - 6x 2250 = 10x 2250/10 = x 225 = x <=== they must sell 225 cameras to equal daily costs
if they increase production by 50.......x = 225 + 50 = 275 16(275) - 6(275) - 2250 = 4400 - 1650 - 2250 = 4400 - 3900 = 500. Their daily profit would be $500.
