Answer:
Classification
Explanation:
Building a machine learning solution that can predict the success of a student in completing a college degree is a binary problem. There are two possible answer: success or not success.
This brings us to a supervised machine learning problem, where one trains the technique with labeled data whether it is a success or not. Since the target variable is discrete (not continuous), classification technique has to be used.
Answer:
Nancy's private key
Explanation:
She's receiving it. That means Matthew used her public key to encrypt it. She should decrypt it using her private key. Watch this video for clarification :)
Watch The Internet: Encryption & Public Keys on the big video site which cannot be named on brainly :p