RE: Help I cant figure it out!!
The speed is the same. My home airport's at 4475 ft, and I fly 65 in a 172 for my speed on final. The only difference is that we're leaning our mixture as part of the runup. Another effect is that on hot days, our density altitude will be up around 6-7,000. Doesn't affect speeds at all, it just takes longer to get to those speeds and overall decreased performance.
Commercial Pilot ASEL - Instrument Rated
Air Traffic Controller - Anchorage