Help me out with this math problem for 50 points!!!

Answer:
1. -15 or negative 15
2. +30 dollars
3. - 6 yards
Step-by-step explanation:
Answer:
Not sure if this is correct, but I'd guess...
-15
+30
and -6?
Step-by-step explanation:
They all represent integers
15 feet below 0 is -15, and a deposit of 30 dollars would give you 30 because you're depositing to gain interest, as well as losing 6 yards in a football game would in turn -6 yards to your current total