How are exponential growth functions similar to exponential decay functions? How are they different?

How many square feet of out door carpet will we need for this hole? 8ft 3ft 12ft 4ft

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)

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?