If you add 1/2 cup creamer (20% butterfat) to 2 cups coffee, how many cups result and what is the percent butterfat of the mixture

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.

Having a hard time understanding this question (see attachment).

Triangles abc and dfg are given. find the lengths of all other sides of these triangles if: b ∠a≅∠d, ab·dg=ac·df, ac=7 cm, bc=15 cm, fg=20 cm, and df-ab=3 cm.