Answer:
There are EIGHT planets in our solar system being:
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
There is a saying where its easy to remember them and remember the form.
My very edjucated mother just served us nachos.
It may not be the EXACT saying, but it still does get the point across.
Yes there is Pluto and the other dwarf planets, but they aren't considered planets. The reasoning for this is because they are too small to be a planet.
Hope this helped!