Complete each of the following sentences by choosing the most appropriate chart or graph for the scenario.
1) A (pie chart, line graph, scatter plot, bar graph) should be used to depict how a monthly income of $2,500 is spent.
2) A (pie chart, line graph, scatter plot, bar graph) should be used to show changes in a patient's temperature in one-hour increments over the course of forty-eight hours.
3) A (pie chart, line graph, scatter plot, bar graph) should be used to show measurements of arm span in relation to height.
4) A (pie chart, line graph, scatter plot, bar graph) should be used to show how many people wear flip-flops when they are the following ages: 20 years old, 21 years old, 22 years old, and 23 years old.