Plotting that point puts us at a y value of -5 (the y coordinate of the point P). y=-8 is a straight horizontal line through y=-8, so the distance from -5 to -8 is 3.  Remember that distance is never negative.  Distance is measured using the absolute value of the numbers. So b is your choice.
        
             
        
        
        
You'll set the two expressions equal to 95.
So 2x+119=95
Then 2x=-24
Finally x=-12
        
             
        
        
        
The function is discrete, as the fee is charged based on the hours
        
             
        
        
        
Answer:315 bulbs planted and 7 left over
Step-by-step explanation:322/15 = 21.44 
Roughly around 21 rows.
21 x 15 = 315 bulbs planted
322 - 315 = 7 bulbs left over