Latex: \begin{cases}
8x-y> 9 \\
\dfrac{1}{2}x+6\ge y \\
y+1> \dfrac{-1}{3}\left(x-9\right)
\end{cases}

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.