Paul Nagel invested some money at 4.5% simple interest and $7000 more than that amount at 2.5% simple interest. After 1 year, his total interest from the two accounts was $455. How much did he invest at each rate?

How many $20 bills do you need to have to make $280

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

Atravel agent is booking a trip to england, scotland, ireland, and france for a group of senior citizens. the agent sent surveys to the group, asking which countries they would like to visit, in order, and created the shown preference schedule (e = england, i = ireland, s = scotland, f = france). which country is the condorcet winner? number of votes 15 12 16 19 1st f e e i 2nd e s i s 3rd s i s e 4th i f f f 1. scotland 2. england 3. france 4.ireland