Alice is making a sandwich to pack in her lunch. she has 2 different kinds of bread, 3 cheeses, 4 lunch meats, and 2 condiments to choose from. assuming she uses one of each of bread, cheese, meat, and condiment, how many different sandwiches can she make?

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads

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.