Constant rate means its the same rate and didn't change over time
Option C:

Solution:
Given expression: 2 ln 8 + 2 ln y
Applying log rule
in the above expression.
⇒ 
Applying log rule
in the above expression.
⇒ 
We know that 
⇒
Hence, the expression in single natural logarithm is
.
The image is not clear you have to retake the picture I can’t see the numbers in the table
3x+6 I believe because you can’t add a number with a variable to a number without one
If you’re cutting it into half inch pieces, you’ll take the length of the roll and multiply it by 2, so 13•2=26