1 billion can be expressed as 1 x 109.
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8 billion in standard form is written as 8 x 10^9. This is because the number 8 billion can be represented as 8 multiplied by 1 billion, which is 1 with 9 zeros. So, in standard form, we use the base 10 and the exponent 9 to represent 8 billion.
The exponent of 11 is 1.
An exponent is 1; 16 = 16^1
The exponent of any constant number is 1.
Whenever you see a variable (letter) without any exponent, it's exponent is 1.