What is a confounding variable? What are some examples of confounding variables?

What is the function of the organelle labeled a in the diagram?

Amedical center’s rectangular parking lot currently has a length of 30 meters and a width of 20 meters. the center plans to expand both the length and the width of the parking lot by 2x meters. what polynomial in standard form represents the area of the expanded parking lot?

Imagine a 28-year-old man named keith is about to be released from prison after serving a seven year sentence. keith is not sure where to start when he gets out. the lease on his apartment and his job are both long gone. he has no immediate family to get him a hand, he will be completely on his own. what types of things do you think he might need with once he is released?