Belinda wants to invest $1,000. The table below shows the value of her investment under two different options for three different years: Part A: What type of function, linear or exponential, can be used to describe the value of the investment after a fixed number of years using option 1 and option 2. Explain your answer.

Part B: Write one function for each option to describe the value of the investment f(n), in dollars, after n years.

Part C: Belinda wants to invest in an option that would help to increase her investment value by the greatest amount in 20 years. Will there be any significant difference in the value of Belinda's investment after 20 yeads if she uses option 2 over option 1? Explain your answer, and show the investment value after 20 years for each option. ​