A website that supplies Asian specialty foods to restaurants advertises an 8-ounce bottle of Plum Sauce for $4.00, but shipping for one bottle is $14.27. The shipping cost for two bottles is $14.77. The cost for five bottles, including shipping, is $35.93. Answer the following questions based on this scenario. Round to the nearest cent, when necessary.

a. Write the three ordered pairs where x represents the number of bottles purchased and y represents the total cost, including shipping for one, two, or five bottles purchased.

b. Calculate the slope between the origin and the ordered pair that represents the purchase of one bottle of Plum Sauce. Explain what this amount means in terms of the sauce purchase.

c. Calculate the slope between the origin and the ordered pair that represents the purchase of two bottles of Plum sauce (including shipping). Explain what this amount means in terms of the sauce purchase.

d. Calculate the slope between the origin and the ordered pair that represents the purchase of five bottles of Plum sauce (including shipping). Explain what this amount means in terms of the sauce purchase.