When you have an exponent that is negative, it means to take reciprocal of the fraction then take it the power.
Some examples:
5^-2 = 1/5^2 = 1/25
10^-3 = 1/10^-3 = 1/1000
If this answer wasn't clear enough, just comment below or DM me a message!
Answer: One
I believe it is one because they only complete each other at one point
I hope this is good enough:
Answer:
0.875
Step-by-step explanation: