Answer:

Explanation:
9 x 9 x 9 x 9 is 9 multiplied by itself four times, so it's 9 to the 4th power as typed above.
Answer:
Carla is as sharp as a tack
The house was pitch black like a cave
The childs cheeks were red like a rose
the wall is as thick as a brick
Alison runs like a cheetah
Ben is as violent as a lion
Ramon is strong like an ox
Her hands were as cold as ice
The puppy swam like a seal
Explanation:
I don't know if you wanted me to change them into correct similes but here you go.