NEED HELP ASAP WILL MARK BRAINLIEST!

Answer:
1.5
Explanation:
Given that:
While solving this problem, the above following is not required to use.
[tex]\rightarrow \sf log_b ([b^3])^{1/2}[/tex]
apply log rule
[tex]\rightarrow \sf \dfrac{1}{2}\log _b\left(b^3\right)[/tex]
[tex]\boxed{\sf \log _b\left(b^3\right)=3}[/tex]
[tex]\rightarrow \sf \dfrac{1}{2}(3)[/tex]
distribute
[tex]\rightarrow \sf \dfrac{3}{2} \quad or \quad 1.5[/tex]