How would a booming economy help with the development of a new genre like Rock and Roll?

What function should you choose if you want to make a copy of a digital image file to back it up? a) save b) copy c) save as d) all of the above

Who was pink floyd? i need answer for assignment answer who he was and three songs he sang.

Suppose that you are in a room with 3 doors and a crack in the ceiling for light. that is all. the doors each have a sign on them that says what there is behind them. door #1. a pool of corrosive acid. door #2. a crocodile that hasn't eaten in 8 months. door #3. a solar "oven". a giant lens that focuses all the sunlight at the entrance of the door. you must choose a door, which door do you choose?