What is the 100th term in the sequence an= 4n-12

Trigonometry help asap

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.

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?