C - (0.40c - 0.15) - (0.60c - 0.20)
I hope this helps :)
So chance to get a black pen: 4/10=2/5
Chance to get a red pen: 1/10
Chance for the two happened at the same time
2/5 * 1/10 = 2/50=1/25
I think... I’m not very sure though
The answer would be <em>29.5562243957</em>.
Line B
Explanation:
The slope is negative so the line is going to the left. The y-intersect is 1.
