Write an estimate of 9 billion and express the result as a product of a single digit and an integer power of 10.

Answer 1

To express 9 billion in the form of a product of a single digit and an integer power of 10, we first write 9 billion in numerical form:

9 billion = 9,000,000,000

Now, we can express this as:

\[ 9,000,000,000 = 9 \times 10^9 \]

Thus, the estimate of 9 billion expressed as a product of a single digit and an integer power of 10 is:

\[ 9 \times 10^9 \]