Answer
$3.455\times10^{7}$ Wii units
Work Step by Step
We are given that Nintendo has sold approximately $34,550,000$ Wii units.
Step 1: To write this number in scientific notation, we move the decimal point to the left until the original number is 3.455.
Step 2: Since the original number was greater than 10, we moved the decimal by 7 positive places. In other words, we will raise 10 to a power of 7.
Now, we write the product of the two numbers found in Step 1 and Step 2.
$3.455\times10^{7}$ Wii units