Answer:
A
Explanation:
Although rounding is needed, this answer makes the most sense.
If the question is (2.5 x 10^3) + (3.5 x 10^2):
= (2.5 x 1000) + (3.5 x 100)
=(2500) + (350)
= 2850.
Taking out the 10^3 with scientific notation leaves us with 2.85 x 10^3. Because this isn't an answer choice, A is the closest.
