Answer:
Yes, the student is correct
Step-by-step explanation:
Given

Required
Does it represent the x intercept
At the x intercept, the value of x is 0.
So, the function  becomes
 becomes 
 can be compared to
 can be compared to 
Hence, the student is correct
 
        
             
        
        
        
Answer:
Step-by-step explanation:
That'd be the second root of 7^3, where 3 is the exponent of the radical.
 
        
                    
             
        
        
        
15 is A, 22+X=8
I don't have time to solve the rest RN but will come back later