(1.9 x 10^5)^3 = 1.9^3 x 10^15 = 6.859 x 10^15
        
             
        
        
        
First you divide 39/40
you would get 0.975
        
                    
             
        
        
        
B. 42 degrees 
Angle ABC is an inscribed angle so u have to divide Arc AC by 2 to find angle ABC.
84degrees divided by 2 is 42 degrees.
        
                    
             
        
        
        
F/g(x) = (2x^2 + 5x - 1)/(x + 3)
f/g(4) = (2(16) + 5(4) -1)/(4 + 3)
         = (32 + 20 -1)/7
         = 51/7
        
             
        
        
        
The answer would be
- (34x^3 - 35)