52 I think , because 6 1/2 x 8 is 52
10 hours seems like the most reliable answer because it matches up the best
Answer:
D. 
Step-by-step explanation:
Consider the set

This set consists of four ordered pairs.
The first numbers in these pairs are
These numbers are integer numbers (not natural, because -3 is negative).
The second numbers in these pairs are
These numbers are integer numbers too (not natural, because -2 is negative).
Options contain only natural and real sets, so, the first and the second numbers are real numbers and

Answer:
7/8 or 0.875
Step-by-step explanation:
If you want it in fraction form, it's 7/8. If you want it in decimal form, it's 0.875.