Your question makes no sense could you give a better description please
        
             
        
        
        
Mato's rectangular prism's volume is
40
To find the volume of a Rectangular Prism it's:
Volume= Length x Width x Height
Draw a rectangular prism with the volume of 40.
Then just explain by showing how to solve for your prism's volume and then Mato's. 
If you need anything else just ask!
 
        
             
        
        
        
Answer:
2x+8b
Step-by-step explanation:
First since 1 and 8b are on the same side mutiply them:
1bx8=8b
So our new equation is 2x+8b
 
        
             
        
        
        
The number would be 21 because if you add 5+37 then divide by 2.Younwill get the answer