Which situation could be modeled by the function y = 400(1 – 0.17)x? a. The amount of medicine in milligrams, y, in a human body that starts with 400 milligrams and decreases by 17% every hour, x

b. The height of a tree, in inches, y, that starts at 400 inches and grows by 17 inches every year, x

c. The population, y, of a city after x years that grows at a rate of 17% every 3 years

d. The money, y, in an account that starts with $400 and increases by 17% every year, x

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.