Help plz and fast I need to get this done fast thank you in advanced

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

Combine like terms to make a simpler expression 3z+z

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π