Final answer:
8,220,000 in scientific notation is written as 8.22 × 106, which corresponds to option d) 6.
Step-by-step explanation:
The number 8,220,000 in scientific notation is 8.22 multiplied by 10 raised to the power of 6, which is written as 8.22 × 106. To express a number in scientific notation, we need to follow the format of a single digit or a decimal number between 1 and 10 multiplied by 10 raised to a power. Since we move the decimal place 6 positions to the left to get 8.22 from 8,220,000, the exponent for 10 is 6.
Therefore, the correct answer to the question is 8.22 × 106, which corresponds to option d) 6.