Answer: P(100) will be the profit from selling 100 bars
P(100) = 4.5*(100) - 40 = ........
P(n) = 230 = 4.5 (n) - 40
270 = 4.5 n
n = 270 / 4.5 = .......
P(n) = 230 means after selling 'n' bars the profit is 230
Explanation:
P(100) will be the profit from selling 100 bars
P(100) = 4.5*(100) - 40 = ........
P(n) = 230 = 4.5 (n) - 40
270 = 4.5 n
n = 270 / 4.5 = .......
P(n) = 230 means after selling 'n' bars the profit is 230