Final answer:
To calculate the cost per square mile of Florida, divide the total cost of the purchase, $5 million, by the total area of 66,000 square miles, using the keystrokes A.5,000,000 / 66,000 =.
Step-by-step explanation:
The question asks about the cost per square mile that the United States paid for Florida in 1819.
To find this, we should divide the total cost by the total area. Therefore, the correct key strokes on a calculator to give the cost per square mile that the United States paid for Florida are: 5,000,000 divided by 66,000.
The correct sequence of operations is indicated by option A: 5,000,000 / 66,000 =. When you perform this calculation, you'll find out how much one square mile of Florida cost at the time of purchase.