To find the sum of the populations of the two cities in scientific notation, we need to ensure both populations are expressed in the same power of ten.
The populations are:
- City A: \( 3.45 \times 10^6 \)
- City B: \( 1.3 \times 10^5 \)
First, we can convert the population of City B to the same power of ten as City A:
\[ 1.3 \times 10^5 = 0.13 \times 10^6 \]
Now, we can sum the populations:
\[ 3.45 \times 10^6 + 0.13 \times 10^6 = (3.45 + 0.13) \times 10^6 = 3.58 \times 10^6 \]
Therefore, the sum of the populations of the two cities in scientific notation is:
\[ \text{3.58} \times 10 \text{ to the power of 6} \]
The correct response is: 3.58×10 to the power of 6