Answer:
x=35°
Step-by-step explanation:
So first, recall that the interior angles of a triangle must total 180°.
The sum of the angles for the given triangle can be described by:

Since the total must equal 180°, set the expression equal to 180°.

To find the value of x, we just need to solve for x.
To start, subtract 110 from both sides. The 110s on the left cancels:

Now, divide both sides by 2. The 2s on the left cancel.

Therefore, the value of x is 35°.
Multiplying -15 by 60 yields -900, so the amount of water in the pool changes by -900 gallons in one hour.
Let x equal the number of adult tickets sold.
X + 3X=512
(I put 3x because we know the students sold 3 times as many).
Solve for X.
X+3X=512
4X=512
4X/4=512/4
X=128
We are going to find the plot where this coordinates are in the graph.
Your graph will be in the attachment below.
~Jurgen