The correct form is tengo - /Yo tengo quince anos/.
Hope this helps.
The Olmec, Maya, and Aztecs were the three early main groups of MesoAmericans.
Correct me if i'm wrong.
Thanks for asking.
Yo <em>estoy hablando</em> con Miguelito.
Estar = not done yet, but will be done...
vs.
Estoy = in the current process of...
Hablo = Speak
vs.
Hablando = Speaking
In this sentence we use estoy and hablando because it is current.
Hope this helps!~