`3 xx 10^(5) + 4 xx 10^(3) + 7 xx 10^(2) + 5` is equal to

Options

A. 304705
B. 347500
C. 3004705
D. `3475 xx 10^(10)`

Answer

To solve the expression \(3 \times 10^5 + 4 \times 10^3 + 7 \times 10^2 + 5\), we will follow these steps:

### Step 1: Calculate each term separately
- \(3 \times 10^5 = 300000\)
- \(4 \times 10^3 = 4000\)
- \(7 \times 10^2 = 700\)
- \(5 = 5\)

### Step 2: Write down the results
Now we have:
- \(300000\)
- \(4000\)
- \(700\)
- \(5\)

### Step 3: Add the numbers together
Now we will sum these values:
1. Start with \(300000\).
2. Add \(4000\):
\[ 300000 + 4000 = 304000 \]
3. Add \(700\):
\[ 304000 + 700 = 304700 \]
4. Finally, add \(5\):
\[ 304700 + 5 = 304705 \]

### Final Answer
Thus, the final result of the expression \(3 \times 10^5 + 4 \times 10^3 + 7 \times 10^2 + 5\) is:
\[ \boxed{304705} \]