Es Cumpleaños singular o plural ? Please help

Read the sentence. what is happing between juan and roberta? juan le da joyas a roberta.(3 points) a)juan is giving a gift to roberta. b)roberta is giving a gift to juan. c)juan is receiving a gift from roberta. d) juan is receiving jewelry.

Question 2 multiple choice worth 2 points) which of the following means "she has just arrived at school"?

Enuncia un ejemplo (sea social o natural) en el que creas se puede aplicar el cálculo y argumenta el tipo de proceso que es necesario para modelar tu ejemplo.