Why is black added to the paint color model used in printing?

Why do people ls swap a rx7? #keeptherotteryalive

Gus needs to purée his soup while it's still in the pot. what is the best tool for him to use?

Ineed this to be answered fast and you i would appreciate it1. what benefits are there to using an online filter app? 2. of the apps you researched, which would you choose to edit your own photos? why would you choose this app over the other ones? 3. if you could choose between using the camera accessory filters that connect to your camera or the photo editing app filters, which would you choose and why?