To solve this problem you must apply the procceure shown below:
1. Let's round the value to the nearest ten thousand. As you can see, the number 3 is the thousand place and it is less than 5, therefore, the value must be rounded to $40,000.
2. By using a single digit times a power of ten to express 40,000, you have:
[tex]40,000=4[/tex]x[tex]10^{4}[/tex]
Therefore, the answer is: [tex]4[/tex]x [tex]10^{4}[/tex]
