The coefficient of multiple determination r2y.12
a. measures the proportion of variation in y that is explained by x1 and x2.
b. measures the variation around the predicted regression equation.
c. will have the same sign as b1.
d. measures the proportion of variation in y that is explained by x1 holding x2 constant.

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?

Three consecutive even numbers have a sum between 84 and 96. a. write an inequality to find the three numbers. let n represent the smallest even number. b. solve the inequality. a. 84 ≤ n + (n + 2) + (n + 4) ≤ 96 b. 78 ≤ n ≤ 90 a. 84 < n + (n + 2) + (n + 4) < 96 b. 26 < n < 30 a. 84 < n + (n + 1) + (n + 2) < 96 b. 27 < n < 31 a. n + (n + 2) + (n + 4) < –84 or n + (n + 2) + (n + 4) > 96 b. n < –30 or n > 31

In the year 2005, the enrollment at lincoln community college (lcc) was 3100 students.in 2007, the enrollment was 3350 students.if lcc's enrollment continues to increase at the same rate, hiw many students will be enrolled at lcc in 2013?