How can you use geometric formulas in real world situations?

Iam so stuck. what is the worked out answer for this question?

Sheila wants to bake six muffins but the recipe is for 12 muffins . this means you only need half of the ingredients listed how much of the of each ingredient does she need? one cup and banana chips ,7 tablespoons oil , two eggs, 3/4 cups flour 1/4 cup walnuts show all you work and justify your answer using a baby toulmin.

Select the point that is a solution to the system of inequalities. y< =-x+3 y=x^(2)-3x