Answer:
5
Step-by-step explanation:
see attachment below
 
        
             
        
        
        
13 + (-12) - (-5)
13 - 12 + 5
1 + 5 
= 6.
Answer is A)
        
                    
             
        
        
        
Answer:
The area of the 3d figure
Step-by-step explanation:
the area of the one of triangle is 8.7
and the reactangle is 5 x 7 = 35
and the big one is 10 x 7 = 70
so 8.7 + 8.7 + 35 + 35 + 70 = 157.4
 
        
             
        
        
        
F(b)-F(a)/b-a
A=10 B= -2
F(a) =4 F(b)=17
17-4/-2-10
13/-12