Luckily this is a question that can be answered without the figure, seeing as there isn't one posted..
The vertext of an angle is always the point that the lines connect to. It is the common point of two line segments. For example, look here:
Answer:

Step-by-step explanation:
We want to find the lateral surface area of the cube.
The lateral surface area of a cube is given as:

where a = length of side of the cube
Therefore, given that the length of the side of the cube is 2.5 inches, the area you need to paint is:

Answer:
52
Step-by-step explanation:
W====~~~
Answer:
the answer is 4-x^2
Step-by-step explanation:
-2x
and 2x cancel out
Answer:
4.99
Step-by-step explanation:
If you divide:
$24.95/5bulbs
you get
4.99/1 bulb