The colution to your problem is a. (3,-6)
N 2-1 < 3
n is equal to :
2-1 = 1 so n would have to be 1 in order to be less than 3
sorry misread the question
The answers to the questions
The first answer to your question is 5 6/10 because you pronounce the decimal as six tenths. There is a simpler form of 5 6/10, it is 5 3/5. This is because you divide six by 2 and get 3 and divide 10 by two and get 5.