How many coins are in each pouch?

Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?

The estimated number of people to attend the last bengals game of the season was 2000. the actual number of fans attending was 1200. by what percent did the estimate differ from the actual?

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