100,203=>One hundred thousand, two hundred and three...
hope it helps !!!
        
                    
             
        
        
        
Ann wants to choose from two telephone plans. Plan A involves a fixed charge of $10 per month and call charges at $0.10 per minute. Plan B involves a fixed charge of $15 per month and call charges at $0.08 per minute. 
Plan A $10 + .10/minute 
Plan B $15 + .08/minute 
If 250 minutes are used: 
Plan A: $10+$25=$35 
Plan B: $15+$20=$35 
If 400 minutes are used: 
Plan A: $10+$40=$50 
Plan B: $15+$32=$47 
B is the correct answer. How to test it: 
Plan A: $10+(.10*249 minutes) 
$10+$24.9=$34.9 
Plan B: $15+(.08*249 minutes) 
$15+$19.92=$34.92 
Plan A < Plan B if less than 250 minutes are used.
        
             
        
        
        
Answer:
 
And we can find this probability on this way:
 
We expect around 68.27% between the two scores provided. 
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  
Solution to the problem
Let X the random variable that represent the scores of a population, and for this case we know the distribution for X is given by:
 
  
Where  and
 and  
We are interested on this probability
 
And the best way to solve this problem is using the normal standard distribution and the z score given by:
 
If we apply this formula to our probability we got this:
 
And we can find this probability on this way:
 
We expect around 68.27% between the two scores provided. 
 
        
             
        
        
        
Answer:
The length is 8 inches and the width is 3 inches
Step-by-step explanation:
Let w represent the width.
The length can be represented by 2w + 2
Use the area formula, A = lw, and plug in the area and the expressions for the length and width:
A = lw
24 = (2w + 2)(w)
Simplify and solve for w:
24 = 2w² + 2w
2w² + 2w - 24
Divide everything by 2:
w² + w - 12
Factor:
(w + 4)(w - 3)
Set equal to 0 and solve for each factor:
w + 4 = 0
w = -4
w - 3 = 0
w = 3
Since the width cannot be negative, the width has to be 3.
Next, find the length by plugging in 3 as w:
2w + 2
2(3) + 2
= 8
So, the length is 8 inches and the width is 3 inches
 
        
             
        
        
        
The answer is the "y" value of (2, 3), 
So the answer is (C), y = 3