Graphical Solution of inequality of the type x ≥ a

Q. What inequality is represented on this number line?
Note: In a number line, a closed circle on the number gets included in the solution, while an open circle on the number will not get included in the solution.

1. $1\le x<4$
2. $1\le x\le 4$
3. $1<x\le 4$
4. $1<x$

Q. Which one of the following satisfies the below inequality?
$3\le x$

1. $x=3$
2. $x=4$
3. $x=6$
4. $x=2.8$

Q. Which one of the following satisfies the below inequality?

1. $x$ can be -1
2. $x$ can be less than -1
3. $x$ can be -2
4. $x$ can not be equal to -1.

Q. William scored greater than or equal to 89 marks on average in all subjects. Choose an inequality to represent this situation

1. $x\ge 89$
2. $x>89$
3. $x=90$
4. $x=89$

Q. Which one of the following represents the inequality $x\ge 0$?
Note: In a number line, a closed circle on the number gets included in the solution, while an open circle on the number will not get included in the solution

1. 
2. 
3. 
4.