(1 point) A store sells CDs at one price and DVDs at another price. The figure below shows the revenue in dollars) of the music store as a function of the number, c, of CDs and the number, d, of DVDs that it sells. The values of the revenue are shown on each line. BODO 10ne-- (Hint: for this problem there are many possible ways to estimate the requisite values, you should be able to find information from the figure that allows you to give an answer that is essentially exact.) (a) What is the price of a CD? (b) What is the price of a DVD? dollars dollars