4 because 4 time 4 time 4 is equal to 64
Answer:
256
Step-by-step explanation:
The value is 256 because 4^4 is 4*4*4*4 which equals 256 :))
Hope this helps:)) Plz mark Brainliest :))
Answer:
Option C. 
Step-by-step explanation:
we know that
Using a Excel tool (Correl function)
see the attached table
The r-value is 
He would have 21 before he bought the 10 stamp because 31-10=21