1. {7, 8, 12, 14}
2. {9, 10, 11, 13}
3. {6, 9, 12, 15}
4. {4, 11, 13, 16}
The correct set of numbers is:
3. {6, 9, 12, 15}
For each number in this set:
- For 6: 18 + 2(6) = 18 + 12 = 30, which is greater than or equal to 36
- For 9: 18 + 2(9) = 18 + 18 = 36, which is equal to 36
- For 12: 18 + 2(12) = 18 + 24 = 42, which is greater than 36
- For 15: 18 + 2(15) = 18 + 30 = 48, which is greater than 36
Therefore, all numbers in the set {6, 9, 12, 15} are solutions to the inequality 18 + 2x ≥ 36.
In which of the given sets of numbers are all the numbers solutions of 18 + 2x ≥ 36 ?
1 answer
1 answer