Answer:
 B is the best 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
the slope is 3
Step-by-step explanation:
 
        
             
        
        
        
In order to find the amount he spent, you must add up the total costs he spent to decorate. 
148.65 
+52.75
+29.33 
_______ 
     ? 
Which means, he spent $230 to decorate his bedroom. 
 
        
                    
             
        
        
        
Answer:
50
Step-by-step explanation:
The slope is change in y divided by the change in x
Change in distance / change in hour
m = (400-200)/(8-4)
    = 200/4
   = 50 
 
        
             
        
        
        
Given,  
∠AOE = 30°
∠DOB = 40°
So, ∠EOD = 180 - (30+40)           [angles on a straight line]
                 =  180 - 70
                 =  110
∠EOD = ∠COF                             [ vertically opposite angle]
∴ ∠COF = 110°