[tex]B=0.028[/tex]
1) Firstly, We need to convert 3 hours and 15 min into decimal. So, we can write out the following:
[tex]\begin{gathered} 3+\frac{15}{60} \\ 3\frac{1}{4}=3.25 \end{gathered}[/tex]
2) As our second step, we can plug into the formula the number we just found:
[tex]\begin{gathered} B=0.08-0.016N \\ B=0.08-0.016(3.25)\Rightarrow B=0.08-0.052 \\ B=0.028 \end{gathered}[/tex]
So Daniel's BAC after 3 hours and 15 minutes drinking is
