Which of the following is equivalent to the pair of inequalities x + 7 > 10 and x - 1 <= 5 ?  Choose the most appropriate option
A) 2 < x < 16 B) 2 <= x < 4 C) 3 < x <= 6 D) 4 < x <= 8 E) 4 <= x <= 16
Solution:   Let’s isolate x in both inequalities, starting with x + 7 &gt; 10.   x + 7 &gt; 10   x &gt; 3   Next we isolate x in the inequality x – 1  5.   x – 1 &lt;= 5   x &lt;= 6   Bringing these two inequalities together we know:   3 &lt; x &lt;= 6   The answer is 3 &lt; x &lt;= 6.
<result>C</result>
Which of the following is equivalent to the pair of inequalities x + 7 > 10 and x - 1 <= 5 ?