## Exercise: Visualize the Gapminder dataset

Create a scatter plot using ggplot() and visualize the gapminder_2007 dataset with the GDP per capita gdpPercap on the x-axis and the life expectancy lifeExp of each country on the y-axis.

1. Specify the gapminder_2007 dataset through the ggplot() function
2. Specify a geometric point layer with geom_point().
3. Map the gdpPercap to the x-axis and the lifeExp to the y-axis with aes()