Tim is laying ceramic tile on a kitchen floor. each tile costs $3.19. how much do 100 tiles cost?

y/x=18

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.