2/7 - (-4/3) -1/3 what is the answer

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Match each inequality to the number line that represents its solution

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?