How many 3-digit numbers less than 500 can be formed from 0, 2, 4, 6, if repetition of digits is allowed?

Ineed to learn how to solve this problem

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)

Jack is considering a list of features and fees for current bank: jack plans on using network atms about 4 times per month. what would be jack’s total estimated annual fees for a checking account with direct paycheck deposit, one overdraft per year, and no 2nd copies of statements? a. $44 b. $104 c. $144 d. $176