Answer:
I believe the answer is D :)
 
        
             
        
        
        
You cannot answer this question without a picture.
        
             
        
        
        
Multiply the bracket by 1/2
1/2(2n +6)
cross out 2 and 2n and divide by 2.
cross out 6 and 2 and divide by 2
n+3
Answer is n+3
 
        
                    
             
        
        
        
Answer:
Yes. Both are graphing calculators. TI 83 has a black only screen while the TI 84 has a colored screen