Math Web Assign

<p>I saw that on the Stony Brook bookstore, they have the Enhanced Webassign Homework Access available and the Enhanced Webassign Mth+Sci Multi-term available.</p>

<p>I suppose that the Multi-term one is for more than one semester, correct?
So the one I would want to buy would be the Enhanced Webassign Homework Access? Is this the one for one semester?
What is the difference between a used and new account?</p>

<p>Is it possible to cancel an order from the bookstore if it is pick-up and place a new order?</p>

<p>Thank you.</p>