The linear model, y equals . 1967 x plus 15.66 comma provides the approximate enrollment, in millions, between the years 2003 and 2012, where x equals 0 corresponds to 2003, x equals 1 to 2004, and so on, and y is in millions of students.

The number of students enrolled in 2012 is approximately 17,400,000 to the nearest 100,000

Step-by-step explanation:

y = 0.1967x + 15.66

x = years since 2003

y = number of students enrolled in millions

In 2012, x = 9 (2012 is 9 years from 2003)

y = 0.1967(9) + 15.66

y = 1.7703 + 15.66 = 17.4303 millions = 17,430,300 = 17,400,000 to the nearest 100,000

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

570, the answer is 570, hope it