Final answer:
The exponent on the 10 when 81,000,000 is converted to scientific notation is 7.
Step-by-step explanation:
The exponent on the 10 when 81,000,000 is converted to scientific notation is 7. Scientific notation is a way to express very large or very small numbers in a compact form. In scientific notation, the number is written as a coefficient multiplied by 10 raised to a power.
In this case, the number 81,000,000 can be written as 8.1 x 107. The exponent 7 indicates that the decimal point is shifted 7 places to the left to obtain the coefficient.
So the answer is 7.