Question

PLS HELP ASAP! 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}

Answer 1

The first one: {2.5,3}

Answer 2

first one, [2.5, 3]

Explanation:

2a + 3
`\geq` 8

2a
`\geq` 8 - 3

a
`\geq` 5/2

a
`\geq` 2.5

if we put a =2 .5 in the equation

2a +3
`\geq` 8

2(2.5) + 3
`\geq` 8

5+3
`\geq` 8

8
`\geq` 8

which is true.

if we put a = 3 in the equation

2a + 3
`\geq` 8

2(3) +3
`\geq` 8

6+3
`\geq` 8

9
`\geq` 8

which is also true.