Assuming deq is a deque object, the expression deq.push_front(elem) deletes the first element from deq.

Column widths can be changed in the Excel Web App by dragging the column ________ to the right or left

A) letter B) divider C) separator D) number

A(n) ____________________ allows you to perform tasks using the keyboard by pressing one or more keyboard keys.

Fill in the blank(s) with the appropriate word(s).