Final answer:
To convert 0.1515 to a fraction, multiply by 10,000 which removes the decimal point, resulting in 1515/10,000 as the fraction.
Step-by-step explanation:
To convert the decimal number 0.1515 to a fraction using a power of 10, we need to eliminate the decimal point. We do this by multiplying by a power of 10. Since there are four digits after the decimal, we must multiply by 10,000 (10 to the fourth power), which gives us 1515 (the decimal digits) over 10,000 as the fraction. The power of 10 to multiply by is determined by the number of places we need to move the decimal point to the right to convert the decimal to a whole number.