What is the velocity at the muzzle? Your ballistics software will tell you, 3012.9 in this case:
This is where mobile software is so great. You can measure velocity, type it into your phone and you have all the adjustment information at you fingertips instantly. You don't have to go home to your desktop computer.
But if your software doesn't have that feature, how would you work it out?
Put in 3000fps as your muzzle velocity, you lose 14.9fps (3000 - 2985.1) in the first 3 yards.
So now we are 3000.1fps at 9 yards, which is close enough.