Answer:
Jessica is 14 years old.
Step-by-step explanation:
Let [tex]o[/tex] equal Olivia's age, let [tex]j[/tex] equal Jessica's age, and let [tex]d[/tex] equal Daniel's age. With this lets write out what we know:
[tex]d = 7[/tex]
[tex]o = d + 2 = 7 + 2 = 9[/tex]
[tex]o = j - 8 + 3 = j - 5[/tex]
[tex]9 = j - 5[/tex]
[tex]j = 9 + 5 = 14[/tex]