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Question
Given x ∈ {whole numbers}, find the solution set of:
–1 ≤ 3 + 4x < 23
Solution
–1 ≤ 3 + 4x < 23
`\implies` –1 ≤ 3 + 4x and 3 + 4x < 23
`\implies` – 4 ≤ 4x and 4x < 20
`\implies` x ≥ –1 and x < 5
Since, x in {whole numbers}
∴ Solution set = {0, 1, 2, 3, 4}
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