Explain and demonstate how to turn 4/20 into a percent

1. what are the missing reasons in the proof 2. it's in the second picture and 3

Use a standard normal table to determine the probability. give your answer as a decimal to four decimal places. −1.5< < 1.5)

Which aspect of electronic commerce does the ftc regulate? a. encryption and transfer of data b. disposing of credit reports c. network security d. antivirus software updates