About how much does the area of a circle increases when the radius increases from 3cm to 5cm?

A. 2cm^2
B. 13cm^2
C. 25cm^2
D. 50cm^2

You can find the constant of proportionality by finding the ratio of

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.

Aline passes through 3,7 and 6,9 what equation represents the line