Hello. 
Have a beautiful and joyful day ahead. 
 
        
                    
             
        
        
        
Answer:
The graph is the correct one
Step-by-step explanation:
 
        
                    
             
        
        
        
 m I think I'm not really sure sorry if I'm wrong.
        
             
        
        
        
Answer:
0ft and 60ft
Step-by-step explanation:
Given
The attached function
Required
Determine the valid values of the domain of the function
To do this, we simply consider the starting point and the end point of the trajectory on the x-axis (i.e. the horizontal distance).
From the attached graph, the horizontal distance starts from 0 and ends at 180.
This implies that the domain is: 
From the options, the values that fall in this bracket are 0ft and 60ft
 
        
             
        
        
        
15. = slope would be 7 and y-int would be -4
16. = slope would be -2/5 and y-int would be 0
17. = doesn’t have a y variable
slope intercept form is y=mx+b with the m being the slope and the b being the y-int. in some cases where the equation is not in this form you have to change it so it is in that form by using opposite operations