-13.4 is the answer. And this is simplified form
        
                    
             
        
        
        
I'm assuming your answers are listed as 1 through 4, not decimals.
You simply take 12 - 8 = 4, but ten min. less than that, so 3 hr, 50 min. then add 3 hr 45 min, totaling 7 hr 35 min. , which is closest to 7 and 1/2 hours, the second option.
        
             
        
        
        
Answer:
x = 75
Step-by-step explanation:
We can write this as a proportion
27            45
--------- = --------
45            x
We can use cross products to solve
27 x = 45 *45
Divide each side by 27
27 x/27 = 45*45 /27
x = 75
 
        
                    
             
        
        
        
Step-by-step explanation:
Statement | Reason
CB=AB         Given
DBC=DBA   Given
DB = DB      Reflexive Property
/_\ DBC 
=~
/_\DBA        SAS
Sorry for the formatting the =~ means congruent. 
 
        
             
        
        
        
Answer:
x+  1= 3
Step-by-step explanation:
^^