Asavings account with compounded interest can be modeled by which type of graph?

A savings account with compounded interest is modeled by a geometric progression. The geometric progression uses the formula A* (1+i/100)^n, where A is the capital invested, i is the % interest rate and n is the number of periods. Being A and i two constants and n the independent variable, the formula is an exponential function. then the type of graph that best models the saving accounts is an expnential graph.

The one that most represents the earths mantle would be the skin since the mantle is the upper part of the earths depths which is just like the skin of an apple.