Answer:
 x=17 plz the brainliest! 
Step-by-step explanation:
3x+39=90 
 3x+39-39=90-39
3x=51 
\frac{3x}{3}=\frac{51}{3}
x=17
 
        
             
        
        
        
Answer:
(3x+1)^2
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Its blurry can you take it again
Step-by-step explanation:
 
        
             
        
        
        
Answer:
the answer should be -4
Step-by-step explanation:
-4 squared would be 8. 3 multiplied by -4 would be -12. 8 + -12 = -4. -4 + 4 = 0
 
        
             
        
        
        
Answer:
6.
Step-by-step explanation:
If each assignment is worth -3, you can divide 18 (amount of points changed) by 3 (each assignment's affect) to get 6.