Answer:
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Step-by-step explanation:
You need to find the value of the variable "x".
To solve for "x" you need to apply the following property of logarithms:

Apply logarithm on both sides of the equation:

Now, applying the property mentioned before, you can rewrite the equation in this form:

Finally, you can apply the Division property of equality, which states that:

Therefore, you need to divide both sides of the equation by
. Finally, you get:

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Answer:
Sorry i don't speak Vietnam so i can't help you if you write it in English i will have a chance to help you
Answer:
Volume of one cube shaped block is, 0.125 cubic feet
Step-by-step explanation:
Volume of a cube(V) is given by:
.....[1]
where a is the edge length of the cube.
As per the statement:
Cube-shaped blocks are packed into a cube-shaped storage container. The edge of the storage container is 2 1/2 feet.
⇒
It is also given that:
The edge length of each block is 1/5 the edge length of the storage container
⇒
Substitute this in [1] we have;

Therefore, volume, in cubic feet, of one cube-shaped block is, 0.125
Answer:

Step-by-step explanation:
We are given the function:

We want to find f(3), so we must substitute 3 in for x.

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction.
Solve the exponent first.

Multiply 8 and 3.

Add.

For the function given, f(3) is 30.