Answer:
6
Step-by-step explanation:
From the blue graph of f(x) we can see that the function value is -6 when x = 6.  Similarly, g(5) = -5.
Then:  4*f(6) - 6*g(5) becomes:
            4*(-6) - 6*(-5), or
               -24 +  30  = 6
 
        
             
        
        
        
What’s that? Maybe I can help! When?
        
                    
             
        
        
        
So for number 2 i am 100% on which the area of the triangle is 6.
and then 1 i think not 100% sure is an acute angle again not 100% 
then 3. it don't make sense to me so idk about that 1 srry.
~Good Luck~ 
        
             
        
        
        
Answer:
C option
Step-by-step explanation:
C is the correct solution of to above equation