In the central city grand prix, out of 30 cars that started the race, 12 of them finished. what percent of the cars finished the race? what percent did not finish the race?

y=mx+b

step-by-step explanation:

m is slope, b is y-intercept

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.