Answer:
C. 
Step-by-step explanation:
Given: 
To find the domain of a logarithmic function, we need to take the argument, 8x, and set it greater to zero. This is because an argument of a logarithmic function cannot be zero or negative.


So since x is greater than zero, we have just found out our domain:
Interval Notation: (0, ∞)
Set Notation: {
}
I am pretty sure that it is C.
The answer is C) glide and reflection because if it were graphed, it would be reflected a line equal to x and slid, or glided upward. Hope this helps! :D
You can use a calculator online you know? It is 21.3