Answer:
y = -4x + 5.
Explanation:
Count rise/run to find the slope, find the y-intercept.
For any single draw,


Drawing a white marble or a gray marble are disjoint events; only one of them can happen. So


Out of 224 draws, you should expect

of the marbles to be either white or gray.
I think the answer is 4/12 or 1/3
It depends on what level of classes you take, but algebra classes in college do tend to be harder than algebra classes in high school or middle school.