Answer:
Company one charges $11 + $0.16 per min.
Then if you talk for x minutes, the cost will be:
C₁(x) = $11 + ($0.16 per min)*x
For company two, the prize is $20 + $0.11 per min, and if yo talk for x minutes, the cost will be:
C₂(x) = $20 + ($0.11 per min)*x
Now we want to find the value of x, the number of minutes, such that the cost is the same with both companies.
C₁(x) = C₂(x) 
 $11 + ($0.16 per min)*x = $20 + ($0.11 per min)*x
 ($0.16 per min)*x - ($0.11 per min)*x = $20 - $11
($0.05 per min)*x = $9
x = $9/($0.05 per min) = 180 mins
If you speak for 180 minutes, the cost is the same in both companies.
 
        
             
        
        
        
<em>Your income determines your credit score</em>
False.
Your income can sometimes affect your credit score, but it's not based on it. Your credit score is based on your Payment history, Credit history, and debt. 
 
        
             
        
        
        
#3 is 4:5:8
#4 is 5:3:10
I think those are the answers, hope that helped.
        
                    
             
        
        
        
Ignore the fact that it says limit because when sin (pi) is here it is not an Undefined Point, whatever value the calculator says is sin(pi) is the answer. 
        
             
        
        
        
Answer:
yes you just have to solve for both x and y in the top system and then solve the other systems to find out which one has the same solutions 
Step-by-step explanation:
hope this helps!