Hello,
multiple of 9 betheen 50 and 99 are :54,63,72,81,99
and 54,72  are even.
5-4=1 and not 5
7-2=5 ok
72 is the number searched.
        
             
        
        
        
Answer:
1 1/3
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
amplitude; 
Phase shift;  units right
 units right
Period;
Step-by-step explanation:
The given function is 

This function is of the form;

The period is given by:

The period is given by:

The phase shift is given by;
 or
 or  units right.
 units right.
 
        
             
        
        
        
Answer:
t'
f
t
Step-by-step explanation: