Tyler’s math class found that it would take 2.5 x 10⁸ dollar bills to cover a square mile area. The surface area of the United States is about 3.8 x 10⁶ square miles. About how many dollar bills are needed to cover the United States? A. 6.3 x 10¹⁴
B. 9.5 x 10¹⁴
C. 6.3 x 10⁴⁸
D. 9.5 x 10⁴⁸

The art class is planning to paint a mural on an outside wall. this figure is a scale drawing of the wall. width: 11 in length: 28 in unit rate: 1.5 ft per in. write the ratio of the area of the drawing to the area of the actual mural. write your answer as a unit rate. show that this unit rate is equal to the square of the unit rate 1.5 ft per in