Question

Which is the solution set for –7 ≤ 4x + 1 ≤ 5?

Answer 1

x ≥



and x ≤














B.






x ≥



or x ≤
















C.


x ≤ –2 or x ≥ 1











D.


x ≥ –2 and x ≤ 1

Answer 2

–7 ≤ 4x + 1 ≤ 5
First subtract 1 from each portion of the inequality.

Answer 3

ok

Answer 4

–8 ≤ 4x ≤ 4
next divide each portion by 4

Answer 5

ah i know i get it. thanks

Answer 6

Good.
Just make sure you also know that if you have to multiply or divide by a NEGATIVE during these simplification then you have to reverse the directions of the inequalities.
\[-6\le -2x \le 8\rightarrow 3\ge x \ge -4\]

Answer 7

oh ok. thanks!