Step-by-step explanation: to set the equation up you would fist order all of the data that is givin and after the data is organized, find out what the x varible and the y varible stand for the take the prices of the advance sales and the price at the door and put it with its varible (6x for advanced salesand 10y for the sales at the door) then add 6x to 10y = 2050 (which is the total amount of dollars made from sales) after you do all the steps you should end up with an equation that looks like this 6x + 10x = 2050
The more people the more results you can factor into a situation. Like testing if you tested 100 there might be a low number of people testing positive but 1000 would be better as you'd have more tested positive and more info to look at if maybe a disease if gene related.
