8 + 8 = 16
16 - 1 = 15
or
7 + 7 = 14
14+1 = 15
I believe the answer is 16
9 I think because 1/4 needs to have 4 of those to be a whole so yeah 9.
The slope-intercept form: y = mx + b
m - slope
b - y-intercept
We have:

<h3>Answer: 5/3</h3>
Cosine(angle) = adjacent leg/ hypotenuse
Cosine( angle ) = 18/20
Angle = arccos(18/20)
Angle = 26 degrees