Philip P. answered • 04/11/17

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Profit = Revenue - Cost

P(x) = 70x - 1000 - (30x + 1000)

P(x) = 70x -1000 - 30x - 1000

P(x) = 40x - 2000

Break-even occurs when P(x) = 0

P(x) = 40x - 2000

0 = 40x - 2000

2000 = 40x

2000/40 = x

50 = x

Can't draw the plot for you on this editor. Both C(x) and R(x) are straight lines in the form y = mx+b where m is the slope and b is the y-intercept. C(x) has a y-intercept of 1000 and a slope of 30. R(x) has a y-intercept of -1000 and a slope of 70.

Jozette C.

04/11/17