18 / 60 = 0.3
Charlie has completed 30% of his deliveries
        
             
        
        
        
Answer:
A. It Increases
Step-by-step explanation:
Given the expression:
1+3f
When f=1, 1+3f=1+3(1)=1+3=4
When f=2, 1+3f=1+3(2)=1+6=7
When f=3, 1+3f=1+3(3)=1+9=10
We can see that the value of the given expression for each successive term increases and in fact form the sequence
4,7,10,...
Therefore, when f increases, 1+3f increases.
 
        
                    
             
        
        
        
Answer:
1.(6*4) + (18*6) + (6*4) 
1.(6*10) + (6*6) + (6*10)
Step-by-step explanation:
there are two ways to break this shape into three rectangles:
1.Top right rectangle, Top left rectangle, Bottom long rectangle
2. Left rectangle, Middle square, Right rectangle. 
 
        
             
        
        
        
First, you need to distribute the right side of the equation : 8n - 2
Now the equation is : 20 - 7n = 8n - 2 
Add 2 to both sides : 22 - 7n = 8n 
Add 7n to both sides : 22 = 15n 
Divide both sides by 15 : ( I had to round this one) 1.5 = n
 
        
             
        
        
        
Answer: 40% chance
Sample space: 3 white 2 red, 5 pairs
2/5 probability, as a percent would be 40% chance