Which of the numbers 6, 7, and 8 is a solution of 3x _< 18?

Answer 1

To determine which of the numbers 6, 7, and 8 is a solution of 3x ≤ 18, we can substitute each number into the inequality and check if the inequality holds true.

For x = 6:
3(6) ≤ 18
18 ≤ 18
This is true, so 6 is a solution to the inequality 3x ≤ 18.

For x = 7:
3(7) ≤ 18
21 ≤ 18
This is false, so 7 is not a solution to the inequality 3x ≤ 18.

For x = 8:
3(8) ≤ 18
24 ≤ 18
This is false, so 8 is also not a solution to the inequality 3x ≤ 18.

Therefore, only the number 6 is a solution to the inequality 3x ≤ 18.