ANSWER
[tex]b\text{ }\leq-15[/tex]EXPLANATION
We have that 2 subtracted from b is at most -17.
This means that 2 subtracted from b must be less than or equal to -17.
That is:
[tex]b\text{ - 2 }\leq\text{ - 17}[/tex]Collect like terms:
[tex]\begin{gathered} b\text{ }\leq\text{ -17 + 2} \\ b\text{ }\leq-15 \end{gathered}[/tex]That is the value of b.