5/13t= -9
Then t =( -9*13) / 5 
T=-23.4
        
                    
             
        
        
        
First covert the feet to meters.
 1 meter = 3.3 feet.
Divide the total number of feet by 3.3 to get total number of meters:
198 / 3.3 = 60 meters per second.
Multiply meters per second by 15 seconds:
60 x 15 = 900 meters in 15 seconds.
 
        
             
        
        
        
4x = 28
28 divided by 4 = 7
x = 7
4•7=28 (TRUE STATEMENT)
        
                    
             
        
        
        
Answer:3.55
Step-by-step explanation:
you add the time dude