Which graph represents the solution set of the inequality x + 2 greater-than-or-equal-to 6 a number line goes from negative 9 to positive 9. a solid circle appears on positive 3. the number line is shaded from positive 3 through negative 9. a number line goes from negative 9 to positive 9. an open circle appears at positive 3. the number line is shaded from positive 3 through positive 9. a number line goes from negative 9 to positive 9. a closed circle appears at positive 4. the number line is shaded from positive 4 through positive 9. a number line goes from negative 9 to positive 9. an open circle appears at positive 4. the number line is shaded from positive 4 through negative 9.