Answer:
y = 3^(1 + x)
Step-by-step explanation:
Notice that each time x increases by 1, y increases by a factor of 3.
Thus, the required equation  has the form y = 3^x.
Check:  If x = 0, do we get 3?  No.  Therefore we must modify the exponent:
y = 3^(1 + x)
Check:  If x = 0, do we get 3?  3^(1 + 0) = 3 (correct)
If x = 2, do we get 27?  3(1 + 2) = 3^3 + 27 (correct)
 
        
             
        
        
        
the coordinates are (-2,1) (-2,-3) that is the answer 
 
        
             
        
        
        
19. 
2568.75 - 2500 = 68.75;
( ? / 100 ) * 2500 = 68.75 ;
? * 25 = 68.75;
? = 68.75 ÷ 25
? = 2.75;
r = 2.75 %
        
             
        
        
        
Answer:
4 m/s downwards
Step-by-step explanation:
Velocity is given by dividing the distance by time taken to cover the diatance. Therefore, expressed as v=d/t
The distance is given as 24 m but the time given covers only half the distance. Therefore, the distance is 0.5*21=12 m
Time taken is given as 3 s
Substituting 12 m for d and 3 s for t then
V=12/3= 4 m/s
Velocity must have direction component hence velocity is 4 m/s downwards