Which of the following sets shows all the numbers from the set {0, 0.5, 1, 2.5, 3} that make the inequality 2a + 3 ≥ 8 true?

{2.5, 3}
{1, 2.5, 3}
{0, 0.5, 1}
{0.5, 1}

Question

Which of the following sets shows all the numbers from the set {0, 0.5, 1, 2.5, 3} that make the inequality 2a + 3 ≥ 8 true?

 {2.5, 3}
 {1, 2.5, 3}
 {0, 0.5, 1}
 {0.5, 1}

anonymous · Answer

@Wendy.Ivette11714

wendy.ivette11714 · Answer

I think the first one

anonymous · Answer

Just simply substitute each separate number into the equality from the set of numbers you have been given.

anonymous · Answer

e.g try when a=0

2a+3 >=8
2(0)+3 =3 is not greater than 8. Hence we can neglect that value and consider the other values in the set given to us.