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?
5,440 acres
1.33 acres
13.28 acres
544 acres
The equation a = 640s can be used to calculate the number of acres.
Given s = 8.5 square miles
a = 640(8.5)
a = 5440
Therefore, Kevin owns 5,440 acres of farmland.
So, the correct answer is 5,440 acres.