i can not unzipp the complete python 3 bootcamp

Hi, I am having problems with jupyter notebook it is not connecting to kernel. Please Help Thank you. Betty Argraves

demo issue

Even though I write the correct code it is saying test is failed! My code to get the expression result as 100 #print(90+10)

Need tutor

Unable to open the file python statement practice

when I try to run the re.search functions on all the files it returns a UnicodeDecodeError: 'utf-8' codec can't decode byte 0x80 in position 3131: invalid start byte. I am on macOS.