How is a ball dropped from a roof interesting ?

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

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.

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2