Question

If the replacement set is the set of natural numbers, find the solution set for the inequality $-4x\ge -16$.

• A. {0, 1, 2, 3, 4}
• B. {1, 2, 3, 4}
• C. {1, 2, 3}
• D. {0, 1, 2, 3}

Answer 1

The correct option is B

{1, 2, 3, 4}

$=-4x\ge -16$
$=\frac{-4x}{-4}\le \frac{-16}{-4}$
$=x\le 4$
$\therefore x=1,2,3,4$