Minutes(m)              Cost
0                                  20
10                                22
20                                24
50                                30
slope formula:
m = (y1 - y2) / (x1 - x2)
m = (20 - 22) / (0 - 10) = -2/-10 = 1/5 or 0.20
y = (1/5)(x) + 20
The rule that describes Amy's monthly cost is:
m = 1/5x + 20 or m = 0.20x + 20
Where x is the number of minutes spent on the call.
        
             
        
        
        
Answer:
yes
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
i think it's f=x2−x−10
Step-by-step explanation:
 
        
             
        
        
        
Answer:
x=-7
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
 <em>8,748 </em>
Step-by-step explanation:
f(x) =  
 
<em>f(6)</em> =  = 12 × 9³ = 12 × 729 = <em>8,748</em>
 = 12 × 9³ = 12 × 729 = <em>8,748</em>