• A. 1 × 10⁹

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Answer:

A. 1 x 10⁹

Step-by-step explanation:

Because number 1000000000 begins with 1 and is followed only by 0s, it can be written as a power of 10

1000000000 = 10

Count the total number of 0s to find the exponent

1 0 0 0 0 0 0 0 0 0 = 10 ⁹

U U U U U U U U U ^

^ ^ ^ ^ ^ ^ ^ ^ ^ |

1 2 3 4 5 6 7 8 9 -----------

Answer:

1 x 10 ⁹ or 10 ⁹

Hope that helps and pa brainliest po please.