Question

Five times a number, x, is not less than 15. Write and solve the inequality.

Answer 1

`5x \geq 15\\x\geq 3`

Explanation:

5 times x must be greater than or equal to 15, thus the inequality is

`5x \geq 15`

To solve, pretend the
`\geq \\` is an = and solve, putting back the
`\geq` for the final answer

`5x \geq 15\\5x = 15\\5x/5 = 15/5\\x = 3 \\x \geq 3`