it’s system of substitutions ? 
so try
a = 2
b = 5
        
             
        
        
        
Answer:
C
Step-by-step explanation:
or the third down from the top. Count the sides and multiply by how many layers
 
        
             
        
        
        
Answer:
The answer is 144.
Step-by-step explanation:
Cause, 6 x 6 for the square is 36. For the triangle, 9 x 6 is 54, and 54 divided by 2 is 27. 27 x 4 is equal to 108. Now, we just add 108 and 36 to make 144.
 
        
             
        
        
        
He could have 30 dimes and 13 quartars