The Future Worth of a Present Value Is Modeled Using $$F ( n ) = P ( 1 + i ) ^ { n }$$

Short Answer

The future worth of a present value is modeled using the following function: $$F ( n ) = P ( 1 + i ) ^ { n }$$ where $F =$ future worth $( \$ )$
$$\begin{array} { l } P = \text { present value } ( \$ ) \\i = \text { interest rate } ( \% ) \\n = \text { length of investment (years) }\end{array}$$
Which type of mathematical model is used here to describe the gravitational force?
a. Linear model
b. Nonlinear model
c. Exponential model
d. Trigonometric model