Answer: -2.5
Step-by-step explanation:
 
        
                    
             
        
        
        
What is 14 and 15 tell me 
        
             
        
        
        
< 1 and < 2 are vertical angles...because they are opposite angles made by two intersecting lines
< 3 and < 4 are adjacent....because they have a common side and a common vertex
        
                    
             
        
        
        
Answer:
4262
Step-by-step explanation:
2 + 7x^2- 2x^3-8x +7x^4     at x = 5
= 2 + 7*(5)^2 - 2*(5)^3-8*5 +7*(5)^4
=2+175-250-40+4375
=4552-290
=4262