Answer:
The graph of the function  is attached as image below.
 is attached as image below.
Analysis:
We have two intersection points in the graph
The function  intersects the y-axis at points (0,4)
  intersects the y-axis at points (0,4)
The function  intersects the x-axis at points (-16,0)
  intersects the x-axis at points (-16,0)
f(x) is positive for x>-`16
f(x) is negative for x<-`16
 
        
             
        
        
        
I think 53.088 is the answer
        
             
        
        
        
I am unsure about the very last problem but I can help with the first two
1) (y+1)+4
If we combine the numbers 1 and 4, we get +5 and can isolate the numbers from the variable.
This would give us

2) (6*r)*7
remember that we do not have to explicitly state 6*r
Instead, we can write it as 6r
this helps us get rid of the parentheses
now we can write it as 

I hope this helps!:)
 
        
        
        
Answer:
14
Step-by-step explanation:
the full length of the line is 17, half of it is 3.
subtract line LN from MN to get LM.
17-3=14