-1 then minus 2 minus 3 then so forth
        
             
        
        
        
Answer:
5
Step-by-step explanation:
( 2 + 4 + 6 + 8) / 4  = 5
 
        
                    
             
        
        
        
Answer:
 n=10
 a10= - 3 (2)^(10-1)= -3(2)^9
 = -1536
 
        
             
        
        
        
P=156 cm
l=6+5w
P=2(l+w)
156=2(6+5w+w)
156=2(6+6w)
156=12+12w
12+12w=156
12w=156-12
12w=144
w=12cm
l=6+5•12
l=6+60
l=66cm
        
             
        
        
        
The graph is **increasing on the interval (-2, 1)**because the graph has a positive slope from x=-2 to x=1. It’s **decreasing at the intervals (-infinity, -2) and (1, infinity)**because the graph has a negative slope between the x values -infinity to -2 and is also decreasing between the x values of 1 and infinity.