Respuesta :

13. Answer: n ≥ 108

Step-by-step explanation:

18 ≤ n ÷ 6

×6      ×6

108 ≤ n       →   n ≥ 108

Note: The line under the inequality symbol represents a closed dot

Graph: 108 ·---------------

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14. Answer: x > -4

Step-by-step explanation:

 -3x <  12

÷(-3)  ÷(-3)

    x > -4      Flip the inequality sign when × or ÷ by a negative

Note: No line under the inequality symbol represents an open dot

Graph: -4 o-----------