please help :( i will give medal!

On Wednesday you invited 3 friends to a party. On Thursday each of these friends invited 3 friends. On Friday each one invited 3 friends.
How many people were invited on Friday? Show your answer as a power.

How many people were invited in all? Explain or show your work.

Question

please help :( i will give medal!

On Wednesday you invited 3 friends to a party. On Thursday each of these friends invited 3 friends. On Friday each one invited 3 friends.
How many people were invited on Friday? Show your answer as a power.

How many people were invited in all? Explain or show your work.

anonymous · Answer

wednesday:3 Total: 3
thursday: 3 friends invite 3 friends (3 times 3) total=9
for friday take the total number and multiply it by 3 because each friend invited 3 friends ( 9 times 3) total=27 friends 
so 3 to the power of three (3^3)|dw:1412134604504:dw|