The equation a = 640s gives the relationship between s square miles and a acres. James owns 2.5 square miles of farmland. How many acres does he own?
160 acres
1,600 acres
0.39 acres
3.91 acres
Option 2: 1,600 acres
To find how many acres James owns, we can substitute s = 2.5 into the equation a = 640s:
a = 640(2.5)
a = 1,600
Therefore, James owns 1,600 acres of farmland.