Hello,
1) 2<2&2/3=2.6666...<3 Answer C (2 and 3)
2)-4<-3.75<3 Answer B ( A and B)
3)abs(B)=3/8 Answer B
4)an absolue value is always positive or null answer FALSE
5)|5-9|=|-4|=4 answer C
6)-|5|+|-5|=-5+5=0 answer C
7)I have understand AC as distance between A and C =2
AC-EF=2-1=1 Answer C
8) CF=2-(-2)=4 Answer D
9) NE=5-1=4 answer C
10)
x-7=6
==>x=1
Answer A