please show all work with formulas

Instructions: Show all of your work for maximum credit using the formulas. There are 30 points possible. 4. (8 points) For the above holding period returns, what is the average annual holding period return and the effective annual return if you purchased the stock in 2017 and sold it in 2021 at the prices listed? 3. (8 points) Given the following year end stock closing prices for Dunphy Enterprises Inc., calculate the annual holding period returns for each year from 2018 to 2021. Year Price HPR 2021 $86 2020 $78 2019 $45 2018 $51 2017 $42 4. (8 points) For the above holding period returns, what is the average annual holding period return and the effective annual return if you purchased the stock in 2017 and sold it in 2021 at the prices listed