Final answer:
The number 482.65 rounded to two significant figures is 480, which in scientific notation is written as 4.8 × 10^2. The correct answer is A. 4.8 x 10^2.
Step-by-step explanation:
To write the number 482.65 to two significant figures in scientific notation, we will first round the number to the appropriate number of significant figures. Here, we have 482.65, which rounded to two significant figures becomes 480. When we express 480 in scientific notation, it becomes 4.8 × 102.
The correct answer from the given options is A. 4.8 x 10^2. This expresses the original number 482.65 to two significant figures in scientific notation.