which of the numbers 1 2 and 3 is a solution of 2x + 1 >= 7

Answer 1

Let's test each number individually by plugging them into the inequality to see if they are solutions:

1. For x = 1:
2(1) + 1 >= 7
2 + 1 >= 7
3 >= 7
This is false, so 1 is not a solution.

2. For x = 2:
2(2) + 1 >= 7
4 + 1 >= 7
5 >= 7
This is false, so 2 is not a solution.

3. For x = 3:
2(3) + 1 >= 7
6 + 1 >= 7
7 >= 7
This is true, so 3 is a solution.

Therefore, the number 3 is the only solution of the inequality 2x + 1 >= 7.