Final answer:
The temperature of the sun at its center is approximately 27,000,000°F when written in decimal notation.
Step-by-step explanation:
The temperature of the sun at its center is approximately 27 million degrees Fahrenheit (2.7 x 10⁷ °F) when written in decimal notation. To convert scientific notation to decimal notation, you move the decimal point to the right the number of times indicated by the exponent. In this case, the exponent is 7, which means we move the decimal point 7 places to the right, resulting in 27,000,000°F.