Math -4 < 4f + 24 <= 4 help me please?

Question

Can someone help me with this question it says: Solve and graph on a number line:

-4 < 4f + 24 <= 4

<= means less than or equal to

Answer 1

Separate into two separate sums

-4 &lt; 4f + 24  &amp; 4f + 24 &lt;= 4

First sum

-4 &lt; 4f + 24

-28 &lt; 4f

4f &gt; -28

f &gt; - 7

Second sum

4f + 24 &lt;= 4

4f &lt;= -20

f &lt;= -5

So &#039;f&#039; has to be greater than -7 and less than or equal to -5

f: { -6, -5}

Answer 2

-4 &lt; 4f + 24 &lt;= 4

-4-24 &lt; 4f + 24 -24&lt;= 4-24

-28&lt;4f&lt;=-20

-7&lt; f &lt;= - 5