Which of these would have been MOST likely to have been built by the Catholic Church in the American southwest in the 1700's? A) fortresses
B) missions
C) ports
D) presidios

ports

Explanation:

You must use PEMDAS. In this case, you only have multiplication and subtraction. Multiplication comes first. 3.97x10 = 39.7 and 3.31x10 = 33.1. Now replace this information: 39.7 - 5 - 39.1 - 5. Now work left to right and subtract. 34.7 - 39.1 - 5. -4.4 - 5. -9.4.