Ivan loves classical music, and his favorite composer wrote nine symphonies. Ivan just happens to the 9 symphonies in exactly the order in which they were written. The table below shows the values that Ivan places on having these symphonies which he does not currently yet own:

Rank Total Personal Value

1_______________19 2_______________36 3_______________51 4_______________64 5_______________75 6_______________84 7_______________91 8_______________96 9_______________99 You can interpret the above to mean, for example, that Ivan values her favorite Symphony at $19, and that the total value of the first Symphony plus Symphony # 2 (his second favorite) is $36, etc. If the symphonies were sold individually on CDs - one symphony per disc - and the price per CD was $10.00, how many CDs would he buy?