They charge fees so they can cover there costs and return value to shareholders
Random digit dialing<span> (RDD) is a method for selecting people for involvement in telephone statistical surveys by generating telephone numbers at </span>random<span>. </span>Random digit dialing<span> has the advantage that it includes unlisted numbers that would be missed if the numbers were selected from a phone book.</span>
Answer:
The equation for the following graph:
Step-by-step explanation:
- You first need to find the slope by using the <u>slope formula</u>:
(where 
is the first point and 
is the second point)
-Use the given points 
and 
from the graph for the formula:
Then, you solve:
After you have found the slope, use the slope 
and the first point for the <u>point-slope formula:</u>
<u>(</u>where 
is the slope and 
is the first point)
Then, you solve:
So, the equation for the following graph is .
Answer:
x=2
Step-by-step explanation:
4( 2+x) = 18-x
8 + 4x = 18 - x
4x+x = 18-8
5x= 10
x=2
