Plz help asap thank you

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

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.

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?