Final answer:
The exponential notation represents a number as 10 raised to a certain power, indicating how many times 10 is multiplied by itself. Since none of the given numerical options in the question represents this form, the correct answer is 'none of the above.'
Step-by-step explanation:
When discussing which decimal number an exponential equals, we refer to a number expressed as 10 raised to a certain power. The power (exponent) of 10 indicates how many times to multiply the number 10 by itself. For example, if the exponent is 2, the resulting number is 10 x 10, which equals 100. Thus, the exponential 10 squared (102) is equal to the decimal number 100.
Using the provided examples, we can understand that 1,230,000,000 written in exponential notation is 1.23 x 109, showing that the decimal has been shifted 9 places, and the exponent is therefore 9. Similarly, a very small number like 0.00000000036 is written as 3.6 x 10-10, which means the decimal point has been moved 10 places to the left, indicated by the negative exponent.
To match with one of the given options, since none of them represent an exponential number in the question, the correct answer is 'none of the above.' Additionally, remember that the common logarithm of a number is the power to which 10 must be raised to equal that number, such as the common logarithm of 100 is 2.