Solve: [tex]\log_2(3x+8) = 5[/tex]

Which is an equivalent equation?

A. [tex]2^5 = 3x + 8[/tex]
B. [tex]5^2 = 3x + 8[/tex]
C. [tex]2^5 = \left[\log_2(3x+8)\right]^2[/tex]
D. [tex]5^2 = \left[\log_2(3x+8)\right]^5[/tex]

Solve for [tex]x[/tex]:
[tex]x =[/tex]



Answer :

To solve the equation [tex]\(\log_2(3x + 8) = 5\)[/tex], let's break down the problem step-by-step.

1. Understand the given logarithmic equation:
The equation [tex]\(\log_2(3x + 8) = 5\)[/tex] is in logarithmic form where the base is 2.

2. Convert the logarithmic equation to its exponential form:
The general property of logarithms states that if [tex]\(\log_b(a) = c\)[/tex], then [tex]\(b^c = a\)[/tex]. Applying this property here:

[tex]\[ \log_2(3x + 8) = 5 \implies 2^5 = 3x + 8 \][/tex]

3. Simplify the exponential equation:
Calculate [tex]\(2^5\)[/tex]:

[tex]\[ 2^5 = 32 \][/tex]

So, the equation becomes:

[tex]\[ 32 = 3x + 8 \][/tex]

4. Isolate the variable [tex]\(x\)[/tex]:
To solve for [tex]\(x\)[/tex], we need to isolate [tex]\(x\)[/tex] on one side of the equation. First, subtract 8 from both sides of the equation:

[tex]\[ 32 - 8 = 3x \][/tex]

Simplifying this:

[tex]\[ 24 = 3x \][/tex]

5. Solve for [tex]\(x\)[/tex]:
Now, divide both sides by 3 to get [tex]\(x\)[/tex]:

[tex]\[ x = \frac{24}{3} = 8 \][/tex]

6. Write the complete solution:
The solution to the equation [tex]\(\log_2(3x + 8) = 5\)[/tex] is:

[tex]\[ x = 8 \][/tex]

Therefore, the final answer is:

[tex]\[ \boxed{8} \][/tex]