Answer:
4,800 acres
Step-by-step explanation:
The equation is
[tex]a=640s[/tex]
where [tex]s[/tex] is square miles and [tex]a[/tex] is acres.
If Pam owns [tex]7.5[/tex] square miles of farmland, then [tex]s=7.5[/tex].
We need to substitute this value into the given equation to determine the acres she has.
This implies that,
[tex]a=640\times 7.5[/tex]
We multiply to get,
[tex]\Rightarrow a=4800[/tex]
Therefore Pam has 4,800 acres.
The correct answer is A