A bag contains seven red balls, five green balls, four yellow balls and two black balls. A ball is picked at random from the bag. What is the probability that the ball will NOT be black?
A.889
B.1.125
C..111
D..667

PFfft black balls-

Step-by-step explanation:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.