You can approximate e by substituting large values for n into the expression
A ( 1+ 1/n)^n
Β. (1-1/2)^n
C. (1-n)^1/n
D. (1+n)^1/n

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?