Answer:
27%
Step-by-step explanation:
15.6 - 11.4 = 4.2
4.2 ÷ 15.6 = .27
.27 = 27% 
 
        
             
        
        
        
Answer:
Area = 209.5 ft² (nearest tenth)
Cost = $505 (approximated)
Step-by-step explanation:
Step 1: convert the inches to be in feet by dividing length in inches by 12.
17 feet 10 inches => 
11 feet 9 inches => 
Step 2: Find the area of the floor of the dinning room
Area = 17.83*11.75 = 209.5 ft² (nearest tenth)
Step 3: Find the cost of the work.
Cost = 209.5 ft² × $2.41 = $505 (approximated)
 
        
             
        
        
        
What are the constraints?
When you graph the constraints the four points you can use are (0,0), (10,0), (0,2), and (6,2). 
(10,0) is the point that gives you the maximum value which is 40.
        
                    
             
        
        
        
12 - 3 = x  , 9 = x . hope this helps
        
                    
             
        
        
        
I believe the answer 30,164.4
 
you multiply 19.95 by 3 and you get 59.85
then you figure out how many hours are from 9 am to 9 pm which was 12 then you multiply that by 6 then you take 59.85 and multiply that by 72 then you multiply that by 7