Question

The equation    a = 640s   gives the relationship between s square miles and aacres.

Pam owns 7.5 square miles of farmland. How many acres does she own?

Answer 1

You'll substitute 7.5 for s because s is the square miles.

a = 640(7.5)
a = 4800

So she owns 4,800 acres.

Hope this helps :)