Answer:
Step-by-step explanation:
'Area of a square' formula is A = s^2, where s in the length of one side.
Here, with s = 4 cm, A = 16 cm^2
3x+3a-9e+8
(4x+4x-5x)+3a-9e+8
8x-5x+3a-9e+8
It's definitely C
it's c for sure