Final answer:
Based on the graph, we would expect 90 students in a class of 450 students to choose country as their favorite type of music.
Step-by-step explanation:
To determine how many students in a class of 450 students would be expected to choose country as their favorite type of music, we need to use the information provided in the graph. Based on the graph, we can see that 20% of the students chose country as their favorite type of music. To find the number of students, we can calculate 20% of 450.
First, we convert 20% to a decimal by dividing it by 100, giving us 0.20. Then, we multiply 0.20 by 450 to find the number of students expected to choose country:
0.20 * 450 = 90
Therefore, based on the graph, we would expect 90 students in a class of 450 students to choose country as their favorite type of music.