The slope is -3/1 so to find other points, go to (2,-1) and go down 3, over 1.
The answer is 82ml. You add 75 and 7.
1.50x + 450 = 3x
450 = 3x - 1.50x
450 = 1.50x
450/1.50 = x
300 = x
300 copies must be sold to break even
Answer:
it's option A .............
