To calculate the correct sum from the given options, we'll first clarify the mathematical expressions involved. Assuming each option presents a scientific notation multiplied or summed, we can perform the required calculations.
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Calculate each expression:
- Option 1: \(7.3 \times 10^7 + 1.8 \times 10^7\)
- Option 2: \(9.1 \times 10^7\)
- Option 3: \(9.1 + 10^7\) — note that adding \(10^7\) directly doesn’t connect with scientific notation consideration.
- Option 4: \(8.1 \times 10^7\)
- Option 5: \(9.1 \times 10^{14}\)
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Perform the sum for Option 1:
\[ 7.3 \times 10^7 + 1.8 \times 10^7 = (7.3 + 1.8) \times 10^7 = 9.1 \times 10^7 \]
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Compare the result with other options:
- Result of Option 1: \(9.1 \times 10^7\) matches Option 2 \( (9.1 \times 10^7) \).
Thus, the correct sum is Option 2: \(9.1 \times 10^7\).