Answer :

Brycesm9
So first you would divide 12 in half to figure out how many inches it moves in 24 hours (or 1 day) which would be 6 inches every 24 hours. You then multiply 6 (inches per day) by 7 (# of days). You end up with 42 inches in 7 days. Hope this helps
[tex]\begin{array}{cccccc}12in&-&36h&/:3\\\\4in&-&12h&/\cdot2\\\\8in&-&24h=1day&/\cdot7\\\\42in&-&7day=1week\end{array}\\\\\\\\Answer:42\ inches.[/tex]