How many petals does lang cempasúchil have?

It should vary.. I mean it's a flower idk who took the time to count its petals

Approximately 20 however that is the approximate amount of petals.

Agame in which two or four players strike a ball with rackets over a net stretched across a court. the usual form (originally called  lawn tennis  ) is played with a felt-covered hollow rubber ball on a grass, clay, or artificial surface.

Tú escribes mucho en la clase de ingles.