<h2>
The required "option D. 9.6" is correct.</h2>
Step-by-step explanation:
In given figure,
AD = x, DB = 12, BE = 8 and EC = 10
To find, the value of x = ?
Use the Side-Splitting Theorem,
We know that,

⇒ 
⇒ x =
⇒ x = 
⇒ x = 9.6
∴ The value of x = 9.6
Thus, the required "option D. 9.6" is correct.
Let x represent the length of the shortest side. Then the perimeter is
.. x +2x +(x +13) = 149
.. 4x = 136
.. x = 34
2x = 68
x+13 = 47
The lengths of the sides are 34, 47, and 68 ft.
There is more then one answer, but one answer is 5 adult tickets and 3 children tickets. (5×3)+(3×2)=21
I'm assuming that you meant h = 6 for choice B, in which case that would be correct.
For this case we have that by definition, the equation of a line in the slope-intersection form is given by:

Where:
m: It's the slope
b: It is the cut-off point with the y axis
We have the following equation:

So:
, the slope is positive

For the graph, we place the point on the coordinate axis:

We draw the line!
The graphic is attached.
ANswer:
, the slope is positive
