Which option best describes how to show that the Product Rule of Logarithms works for the base 4 expression log416+log44

log
4

16
+
log
4

4
?(1 point)
Responses

Evaluate both log416
log
4

16
and log44
log
4

4
and show that their sum is equal to the value of log420
log
4

20
.
Evaluate both logarithm subscript 4 baseline 16 and logarithm subscript 4 baseline 4 and show that their sum is equal to the value of logarithm subscript 4 baseline 20 .

Evaluate both log416
log
4

16
and log44
log
4

4
and show that their product is equal to the value of log420
log
4

20
.
Evaluate both logarithm subscript 4 baseline 16 and logarithm subscript 4 baseline 4 and show that their product is equal to the value of logarithm subscript 4 baseline 20 .

Evaluate both log416
log
4

16
and log44
log
4

4
and show that their sum is equal to the value of log464
log
4

64
.
Evaluate both logarithm subscript 4 b

1 answer

To demonstrate that the Product Rule of Logarithms holds true for the expression \( \log_4{16} + \log_4{4} \), you want to show that this sum is equal to another logarithm expression based on the product of the numbers.

The Product Rule of logarithms states that:

\[ \log_b{m} + \log_b{n} = \log_b{(m \cdot n)} \]

In your case, we have:

  1. \( m = 16 \)
  2. \( n = 4 \)

Now, we can calculate:

\[ m \cdot n = 16 \cdot 4 = 64 \]

Therefore, according to the Product Rule:

\[ \log_4{16} + \log_4{4} = \log_4{(16 \cdot 4)} = \log_4{64} \]

Thus, to verify the statement, you can evaluate \( \log_4{16} \) and \( \log_4{4} \) separately:

  • \( \log_4{16} = 2 \) (since \( 4^2 = 16 \))
  • \( \log_4{4} = 1 \) (since \( 4^1 = 4 \))

Now, add these two results together:

\[ \log_4{16} + \log_4{4} = 2 + 1 = 3 \]

Next, calculate \( \log_4{64} \):

Since \( 64 = 4^3 \), we have:

\[ \log_4{64} = 3 \]

Since \( \log_4{16} + \log_4{4} = \log_4{64} \) yields the same value of \( 3 \), this confirms the Product Rule of Logarithms is indeed valid in this case.

Thus, the best option is: Evaluate both logarithm subscript 4 baseline 16 and logarithm subscript 4 baseline 4 and show that their sum is equal to the value of logarithm subscript 4 baseline 64.