Answer:
.65% / hr = .0065 / hr
2.75 days * 24 hrs / day = 66 hrs
66 hrs * .0065 / hr = .429
So our amount will become
A = A0 ( 1 + .429) = 9700 * 1.429 = 13860
You have 2 unknown variables so no matter what you did you wouldn’t be able to solve this equation.
Due to this, I think the answer is D.