Answer:
8x+40=56
Step-by-step explanation:
You have to distribute the 8
Then finish the rest of the problem
 
        
             
        
        
        
Exact form- 7/2
Decimal form- 3.5
Mixed number form- 3 1/2
I hope that helps!!!
        
             
        
        
        
Call the angles of depression D.
 then tan(D)=20/30, or I
 arctan(tan(D)) = arctan(⅔)
 D=33.690. A is the answer
your calculator probably uses tan^-1 rather than arctan