Question

Write and solve an inequality that means a number plus four is greater than or equal to twelve.​

Answer 1

`x+4\geq 12`

Explanation:

x - a number

x+4 - a number plus 4

x+4
`\geq` - a number plus 4 is greater than or equal to

x+4
`\geq`12 - a number plus 4 is greater than or equal to twelve

Answer 2

Inequality: x + 4 ≥ 12

Solution: x ≥ 8

Explanation:

Plus: "+" → to add something to something else

Greater than or equal to: "≥" → the expression on the left side of the inequality sign is greater than the expression on the right side of the sign.

Let x be the unknown number.

A number plus four is greater than or equal to twelve:

x + 4 ≥ 12

To solve the found inequality, subtract 4 from both sides:

⇒ x + 4 - 4 ≥ 12 - 4

⇒ x ≥ 8

Therefore, the solution to the inequality is x ≥ 8. The unknown number x can be any real number equal to or greater than 8.