THERE ARE 4 QUESTIONS THEY ARE IN THE BOX THAT IS HIGHLIGHTED IT WILL BE HIGHLIGHTED AS 4A, 4B, 4C, AND THE LAST ONE SAY (D.)

4a - 35

4b - 87.5

4c - 140

D - Diego would need to sell 80 tickets to earn $140

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.

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed