Seth’s bank charges $5 a month to maintain a

checking account and $0.50 for each check Seth
writes. Last month, Seth paid a total of $6.50 in
checking account fees. How many checks did he
write?
A 1 C 3
B 2 D 4

Let's start by setting up an equation based on the given information.

Total fees = monthly maintenance fee + (number of checks written x fee per check)
$6.50 = $5 + ($0.50 x number of checks)

Now we can solve for the number of checks.

$1.50 = $0.50 x number of checks
3 = number of checks

Therefore, Seth wrote 3 checks last month. The answer is (C) 3.