QUESTION A
The given inequality is
Add 1 to both sides of the inequality to obtain;
Answer: 2.
, open dot at 6 and shaded to the right.(A)
QUESTION B.
The given inequality is
.
Divide both sides by 2;
.
.
Answer: 5.
, closed dot at 3 and shaded to the left(B).
QUESTION C
The given inequality is
Add 7 to both sides to get;
Answer: 7.
, open dot at 3 and shaded to the right.(C)
QUESTION D
We want to solve;
Divide through by -2 and reverse the inequality sign;
Answer; 3.
Open dot at -3 and shaded to the right. (D)
QUESTION E
We have
Divide through by -4 and reverse the sign.
or
Answer: 6.
open dot at -1, and shaded to the left(E)
QUESTION F
The given inequality is
Add -3 to both sides to get;
Divide both sides of the inequality by -2 and reverse the sign;
Answer:9.
, open dot at 5 and shaded to the right(F)
QUESTION G
The given inequality is
![5x+1\ge11](https://tex.z-dn.net/?f=5x%2B1%5Cge11)
![5x\ge11-1](https://tex.z-dn.net/?f=5x%5Cge11-1)
![5x\ge10](https://tex.z-dn.net/?f=5x%5Cge10)
Divide by 5
![x\ge2](https://tex.z-dn.net/?f=x%5Cge2)
Answer ; 10.
, closed dot at 2 and shaded to the right(G)
QUESTION H
We have ![3(x+4)\:>\:8x-6](https://tex.z-dn.net/?f=3%28x%2B4%29%5C%3A%3E%5C%3A8x-6)
Expand the bracket to get;
![3x+12\:>\:8x-6](https://tex.z-dn.net/?f=3x%2B12%5C%3A%3E%5C%3A8x-6)
Group similar terms to get;
![3x-8x\:>\:-6-12](https://tex.z-dn.net/?f=3x-8x%5C%3A%3E%5C%3A-6-12)
Simplify
![-5x\:>\:-18](https://tex.z-dn.net/?f=-5x%5C%3A%3E%5C%3A-18)
Divide through by -5 and reverse the sign;
![x\:](https://tex.z-dn.net/?f=x%5C%3A%3C%5C%3A18%2F5)
Answer: 1.
Open dot at 18/5 and shaded to the left(H)
QUESTION I
We have
.
![-3x+x\:](https://tex.z-dn.net/?f=-3x%2Bx%5C%3A%3C%5C%3A2-4)
![-2x\:](https://tex.z-dn.net/?f=-2x%5C%3A%3C%5C%3A-2)
Divide by -2 and reverse the sign;
![x\:>\:1](https://tex.z-dn.net/?f=x%5C%3A%3E%5C%3A1)
Answer: 8.
, open dot at 1 and shaded to the right(I)
J. The given inequality ![-2(x-4)\:>\:5-(x+2)](https://tex.z-dn.net/?f=-2%28x-4%29%5C%3A%3E%5C%3A5-%28x%2B2%29)
Expand the bracket to get;
![-2x+8\:>\:5-x-2](https://tex.z-dn.net/?f=-2x%2B8%5C%3A%3E%5C%3A5-x-2)
Group like terms to get;
![-2x+x\:>\:5-2-8](https://tex.z-dn.net/?f=-2x%2Bx%5C%3A%3E%5C%3A5-2-8)
![-x\:>\:-5](https://tex.z-dn.net/?f=-x%5C%3A%3E%5C%3A-5)
Divide by -1 and reverse the sign to get;
![x\:](https://tex.z-dn.net/?f=x%5C%3A%3C%5C%3A5)
Answer; 4.
, open dot at 5 and shaded to the left.(J)