The Monthly Sales S (In Hundreds of Units) of Baseball

Multiple Choice

The monthly sales S (in hundreds of units) of baseball equipment for an Internet sporting goods site are approximated by where t is the time (in months) , with corresponding to January. Determine the months when sales exceed units at any time during the month.

A) August through April
B) April through August
C) May through September
D) March through September
E) March through August