Answer:
-15
Step-by-step explanation:
I have no idea how golfing scores work, but if 3 under par is -3, then 10 under pat would be -10, 5 over pat would just be 5 ('cause it's positive) and 7 under pat would be -7. All you gotta do is add/subtract them.
-3 + (-10) + 5 + (-7)
-13 + 5 + (-7)
-8 + (-7)
-15
Hope this helps