Which of the numbers 1, 2, and 3 is a solution for this problem 2x+1≥7 ?

Answer 1

Let's plug in each number into the inequality and see if it is a solution:

1. 2(1) + 1 ≥ 7
2 + 1 ≥ 7
3 ≥ 7 (This is false)

2. 2(2) + 1 ≥ 7
4 + 1 ≥ 7
5 ≥ 7 (This is false)

3. 2(3) + 1 ≥ 7
6 + 1 ≥ 7
7 ≥ 7 (This is true)

Therefore, the only solution for the inequality 2x + 1 ≥ 7 is x = 3.