What kind of graph would you use to show the number of twins born each year?

I think a line graph

Would you use a line plot or bar graph to display a survey of what teens do for entertainment after school?

I think line plot

It's kind of tricky to answer these, since more than one graph could work. However, I'd say that a line or bar graph (leaning more toward bar graph) would be good for #1, and a bar graph for #2 (unless you're allowed to use pie charts, in which case that would be the best answer).

To show the number of twins born each year, a line graph would be a suitable choice. A line graph is ideal for representing changes over time because it connects data points with a line, making it easy to see trends and patterns in the data.

To display a survey of what teens do for entertainment after school, a bar graph would be more appropriate. A bar graph uses rectangular bars of equal width to represent data and compare different categories or groups. This type of graph is helpful for visualizing and comparing quantities or frequencies of different options or choices. In this case, each category of teen entertainment would have its own bar on the graph, making it easy to see which activities are most popular among the surveyed teens.