A400-g package of grandma's cookies has 18 cookies and costs $2.49. a 700-g package of dee's delights has 12 cookies and costs $3.99. which unit would you use to determine the better buy? explain why you chose that unit.

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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.