A scatter plot was created to show the relationship between the number of staff members and students at various schools. The scatter plot's trend line has an equation of y = 0.1x + 18, where y is the total number of staff members and x is the total number of students.

Question

Use the equation to predict the number of students in a school with 120 staff members.

(pick an answer)
1,038 students

1,020 students

890 students

Answer 1

To predict the number of students in a school with 120 staff members using the equation y = 0.1x + 18, we first substitute x = 120 into the equation:

y = 0.1(120) + 18
y = 12 + 18
y = 30

So, a school with 120 staff members is predicted to have 30 students.

Therefore, the correct answer is:

890 students