I could use some help

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.

Negative 5 1/12 + negative 4 1/4 + 6 3/4

Which is the scale factor proportion for the enlargement shown?