Answer:
The answer is D
Step-by-step explanation:

The volume of the cone is 3.14 x 14 x 14
Answer:
27
Step-by-step explanation:
Answer:
H and b
Step-by-step explanation:
Answer:
f(f(x)) = 27
+ 18x² + 4
Step-by-step explanation:
To find f(f(x)) substitute x = f(x) into f(x) , that is
f(3x² + 1)
= 3(3x² + 1)² + 1 ← expand parenthesis using FOIL
= 3(9
+ 6x² + 1) + 1 ← distribute parenthesis by 3
= 27
+ 18x² + 3 + 1 ← collect like terms
= 27
+ 18x² + 4