When someone purchases a new car and begins to drive it, the mileage (meaning the number of miles the car has traveled) immediately increases. Let x represent the number of years since the car was purchased and y represent
the total miles traveled. The linear function that models the relationship between the number of years since
purchase and the total miles traveled is y = 15000x.

a. Identify and interpret the rate of change

b. Identify and interpret the initial value.

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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.

5. (03.02)if g(x) = x2 + 3, find g(4). (2 points)1619811