Answer: 6 blocks
Step-by-step explanation:
Given
Volume of the rectangular prism is 
Length of the cubic block is 
Volume of each cubic block is

Suppose, n blocks are required to measure the volume of Prism

Thus, 6 blocks are required to measure the volume of prism.
Answer
Subtract
from 
then;

Remove the bracket we have;

Like terms are those terms which have same variable to the same power.
Combine like terms;

Therefore, Subtracting
from
we get 
Answer:
4/27
Step-by-step explanation:
F(x) = 4(1/3)^x
Let x =3
F(3) = 4(1/3)^3
Exponents first
F(3) = 4 * 1/27
Then multiply
f(3) = 4/27