8. The equation a = 640s gives the relationship between s square miles and a acres. Kevin owns 8.5 square miles of farmland. How many acres does he own?

13.28 acres

1.33 acres

5,440 acres

544 acres

5440 acres

Step-by-step explanation:

Given: The equation a = 640s gives the relationship between s square miles and a acres. Kevin owns 8.5 square miles of farmland.

To Find: How many acres does he own.

Solution:

Area of farmland owned by kevin  

The given equation is

here  is area in acres, and  is area in square miles.

putting values in equation

Hence kevin owns   of farmland

c. 4 1/4 pounds