1. The problem asks for the sum of the debts $8,000,000$, $46,000,000$, and $2,000,000$ expressed in scientific notation. 2. First, write each number in standard form: $8,000,000 = 8 \times 10^6$ $46,000,000 = 4.6 \times 10^7$ $2,000,000 = 2 \times 10^6$ 3. To add these, convert all to the same power of ten. Let's convert all to $10^7$: $8 \times 10^6 = 0.8 \times 10^7$ $2 \times 10^6 = 0.2 \times 10^7$ 4. Now add: $$0.8 \times 10^7 + 4.6 \times 10^7 + 0.2 \times 10^7 = (0.8 + 4.6 + 0.2) \times 10^7 = 5.6 \times 10^7$$ 5. The sum of the debts in scientific notation is $5.6 \times 10^7$. 6. Among the options given, the correct answer is $5.6 \times 10^7$.