Answer:
Y= -2x - 18
Step-by-step explanation:
 Hope it works
 
        
             
        
        
        
-18-6k= 1+3k
9k=-19
k=-19/9
k=-2 and 1/9
        
                    
             
        
        
        
Answer:
16 meters
Step-by-step explanation:
The height function is given by:

The value of x, in seconds, for which the derivate of the height function is zero, is the time at which the maximum height occurs:

For x = 3 seconds, the height is:

The maximum height that the ball will reach is 16 meters.
 
        
                    
             
        
        
        
To solve this question, use the Cube surface area formula
Area = 6a^2 in which a = edge.
edge = 8.5
Area = 6(8.5)²
Simplify. Follow PEMDAS
Area = 6(72.25)
Area = 433.5
(C) 433.5 in² is your answer
hope this helps