6+3n≤40
Use inverse operations i.e.
4x+2<10
    -2    -2
4x<8
4*x/4<8/4
x<2
        
             
        
        
        
Answer:f
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
34.75x
Step-by-step explanation:
 
        
             
        
        
        
Answer:
- incorrect
- correct
- incorrect
Step-by-step explanation:
A + B = (-4x^2 +2x -5) +(3x^2 +6) = x^2(-4+3) +x(2) +(-5+6) = -x^2 +2x +1
   The given sum is Incorrect.
__
A - C = (-4x^2 +2x -5) -(-5x -4) = -4x^2 +x(2+5) +(-5+4) = -4x^2 +7x -1
    The given difference is Correct.
__
B + C = (3x^2 +6) +(-5x -4) = 3x^2 -6x +2
   The given sum is Incorrect.