Which of the following sets shows all the numbers from the set {0.5, 1, 2.5, 3, 3.5} that make the inequality 4a + 2 ≥ 12 true?
{2, 2.5, 3}
{2.5, 3, 3.5}
{0.5, 1, 2.5}
{1, 2.5, 3}
worth 15 points! i just can't seem to figure this one out. : )