Evaluate log(104⋅8)

.(1 point)
Responses

log(104⋅8)=4+log8
logarithm left parenthesis 10 superscript 4 baseline times 8 right parenthesis equals 4 plus logarithm 8

log(104⋅8)=log(4⋅8)
logarithm left parenthesis 10 superscript 4 baseline times 8 right parenthesis equals logarithm left parenthesis 4 times 8 right parenthesis

log(104⋅8)=log4+8
logarithm left parenthesis 10 superscript 4 baseline times 8 right parenthesis equals logarithm 4 plus 8

log(104⋅8)=log(4+8)

1 answer

To evaluate \( \log(104 \cdot 8) \), we can use the properties of logarithms.

The property of logarithms we will use here is: \[ \log(a \cdot b) = \log a + \log b \]

Applying this property, we have: \[ \log(104 \cdot 8) = \log(104) + \log(8) \]

Next, we can break down \( 104 \) further: \[ 104 = 10^2 \cdot 10^1 + 4 = 100 + 4 = 104 \]

Using the property again: \[ \log(104) = \log(100 + 4) \text{ which we cannot simplify directly, so we stick to the original.} \]

Since we know: \[ \log(100) = 2 \quad \text{and we approximate } \log(4) \approx 0.6021 \text{ and } \log(8) \approx 0.903 \] We can recognize that \( \log(8) = \log(2^3) = 3\log(2) \).

In simpler terms, without specific computation, we recognize that: \[ \log(104 \cdot 8) = \log(104) + \log(8) \quad \Rightarrow \quad \text{which is not one of the options.} \]

Now, focusing on the closest options presented:

  1. \( \log(104 \cdot 8) = 4 + \log(8) \) - This reconstruction is incorrect based on simplifications.
  2. \( \log(104 \cdot 8) = \log(4 \cdot 8) \) - This reconstruction is incorrect.
  3. \( \log(104 \cdot 8) = \log4 + 8 \) - This reconstruction is incorrect.
  4. \( \log(104 \cdot 8) = \log(4 + 8) \) - This reconstruction is incorrect.

Thus, the correct expression should indeed be: \[ \log(104 \cdot 8) = \log(104) + \log(8) \]

However, referring back to the solutions proposed: the answer is closest to: \( \log(104 \cdot 8) = 4 + \log(8) \), as it separates out \( 100 \) from \( 4 \cdot 8 \) rather than attempting to sum directly.

Thus: \( \log(104 \cdot 8) = 4 + \log(8) \) is the most accurate from the options provided.