1.98
hope this helps have a nice day and i would appreciate if you mark me brainlest
        
             
        
        
        
G(n) + f(n)
3n + 1 + 4n - 3
7n - 2
        
             
        
        
        
Answer:
The amplitude  of the given sinusoidal function is 3.5 
Step-by-step explanation:
The given sinusoidal function is 

This function is of the form:

where 
a=|-3.5|=3.5 is the amplitude.
Therefore the amplitude of the given sinusoidal function is 3.5