Let x be the number of pages in a statistics textbook and y be the cost of the book (in dollars). Suppose that x and y are related according to the simple linear regression model with: slope of the population regression line = 0.075

y-intercept of the population regression line = 25.0

What is the equation of the population regression line? (use context words...not x and y)

For a statistics book of 900 pages, what is the predicted cost in dollars? (round to the nearest penny)

What is the average change in price that is associated with a one-page increase in size of a statistics book? (round to the nearest penny)

What is the average change in price that is associated with a 20-page increase in size of a statistics book? (round to the nearest penny)