Answer:
I'm not completely sure but if they want exponents for 6 * 6 * 6 then it should be 
Step-by-step explanation:
2 would be the base and 3 will be the square
Answer: A=4πr2
I really hope this helped!!
x = Nick's age y = Sara's age
Nick is 8 years older than Sara, therefore
y = x - 8