What does tener que infinitive mean

1
What does tener que infinitive mean?
To have to (do something)
Translate the following sentences.

• I have to prepare a cake for the party.
• _____________________________________________
  _

Tengo que preparar un pastel para la fiesta.

• The family has to decorate with balloons and cut
  paper.
• _____________________________________________
  _

La familia tiene que decorar con los globos y el
papel picado.

• Rolando and you do not have to make a video.
• _____________________________________________
  _

Rolando y tú no tenéis que hacer un video.

• What do my cousins have to do?
• _____________________________________________
  _

Qué tienen que hacer mis primos?