Answer:
c
Step-by-step explanation:
 
        
             
        
        
        
Answer:
446mm
Step-by-step explanation:
If we box off parts of the area, it makes it easier to solve. I personally broke it into tiny bits:
Upper left box: 16mm
Bigger box (excluding little box): 90mm
Big rectangle: 340mm
Now, add them all together. 
Equals 446mm
 
        
                    
             
        
        
        
I will help you but I need to know what you need help with , find the area or volume?
        
             
        
        
        
Instead of using an = sign we use 

 becuase its less than or equal to 100 dollars.
The equation of the line is y=10x+7
sub in 100 for y and the inequallity sign
10x+7

100
solve so x is isolated
10x

93
x

9.3
technically the answer is 9 because you cant buy a fraction of a CD