I really suck at math can smb help me

Need to increase the numbers of customers i talk to daily by 20% how many customers do i need to talk to if i talk to a average of 8 customers per hour during an 8 hour shift

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?