Answer:
10 + 6C
Explanation:
C = the number of CDs Alyssa has
Alyssa has C CDs
Fran has five more than three times as many CDs as Alyssa.
Fran has 5 + (3 * C)
Fran has (5 + 3C) CDs
Jessica has twice as many CDs as Fran
Jessica has 2 * (5 + 3C) CDs
Jessica has 10 + 6C CDs