To find the total area of the national park and the national forest combined, you can add their areas together:
- National Park: \( 1.42 \times 10^6 \) acres
- National Forest: \( 1.2 \times 10^6 \) acres
Now, add the two areas together:
\[ 1.42 \times 10^6 + 1.2 \times 10^6 = (1.42 + 1.2) \times 10^6 = 2.62 \times 10^6 \]
So, the total area in acres is \( 2.62 \times 10^6 \) acres.
The correct response is: 2.62×106 (2.62 times 10 superscript 6 baseline).