Answer
F
Work Step by Step
For the first part of the scientific notation, you have to take 40,500,000 and make it 4.05. Now you will count how many times you have to move the decimal to get to 40,500,000, and you will see that you have to move the decimal 7 places. That is now your exponent, so your answer is now 4.05 x $10^{7}$
