Pretty Sure Its B I had this question Too
        
                    
             
        
        
        
Answer:
45
23
104
49
Step-by-step explanation:
 
        
                    
             
        
        
        
Same as all the other ones like this.
Since the two figures are similar . . .
-- The ratio of of their volumes is  R³ .
-- The ratio of their surface areas is  R² .
-- The ratio of their dimensions is  R .
So  R³  is        729 / 2744 .
Take the cube root of that and you'll have  R .
Then square R and you'll have the ratio of their surface areas.
        
             
        
        
        
Answer:
y=20
x=4
Step-by-step explanation:
Since you can plug the first 2 coordinates into the slope equation ( ) you will get 4 for the slope so for the equation for the parallel line you would get y=4x+4 and since the x=4 you could plug that in and you would get y=20 and x=4
) you will get 4 for the slope so for the equation for the parallel line you would get y=4x+4 and since the x=4 you could plug that in and you would get y=20 and x=4
 
        
                    
             
        
        
        
I'm not going to do the entire question, but I'll do the first part.
For the first part, you have to set up an inequality. Use context clues, such as 
no more than (the one used in this sentence) to figure out what the symbol should be for the inequality.
In this case, because it is NO MORE THAN 6400, it would be:
6400

250r + 475p
where r represents the # refrigerators, and p represents the # pianos
Now that you have the equation, make the graph, then for the 3rd part, plug in 12 and 8 to r and p to see if it keeps the inequality true.
Hope this helps! :)