Answer:
4cos4x
Step-by-step explanation:
let's use cos
amplitude=4
period=pi/2
2pi/x=pi/2
x=4
no phase shift
y=4cos4x
pic from desmos
 
        
             
        
        
        
Answer:
65,212
Step-by-step explanation:
 
        
                    
             
        
        
        
By changing the number into a decimal, and then moving the decimal twice to the right. 
        
                    
             
        
        
        
Step-by-step explanation:
s ks ok w merto s mak osmwokwmsos