0 is less than or equal to 3p+6 less than 18
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You need to graph this solution set on the number line, yourself. I can't do everything for you now, can I?
0 <= 3p+6 < 18. Subtract 6 from all compounds of the inequality. You will get an equivalent compound inequality -6 <= 3p < 12. Next, divide all compounds of the last compound inequality by 3. You will get - 2 <= p < 4. It is your answer. Below is the graph. ---O------[======|======|======|======|======|======)------o--- -3 -2 -1 0 1 2 3 4 5