Answer:
2.204 x 10^9
Step-by-step explanation:
Get the first non-zero digit down to just before the decimal point by moving it (the decimal) to the left. Count the number of times you did that to get the power you raise 10 to, and consider that you're moving it to the left (your power will be positive). This ensures the values are equal.
Move the decimal in 2,204,000,000 to the left until you're at 2.204. You should have done it 9 times, so your answer is 2.204 x 10^9.
