Answer:
A
Step-by-step explanation:
A number decreased by three square is: (where x is the number)
x - 3^2
Answer:
36
Step-by-step explanation:
18=a/2
2*18=a
36=a
We can seperate (3b³) into two different parts, the constant and the variable.
The constant (3) and the variable (b) can both be squared and multiplied to get the correct answer, so:
3² = 9
(b³)² = 
So, 
3.303e+13 that is approximately