book Maths Puzzle Numerical Ability

Hello,I am a junior in Honors Pre-Calculus and I am not sure how to do these problems:

1) Suppose you have 102m of fencing to make two side-by-side rectangluar enclosures, as sh

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I am struggling with inequalities that involve absolute values. Equation /y+5/<2 Does it make a difference if when removing the absolute values whether i change equation to -y-5> which of the following is an arithmatic sequence?
a)-2,1,4,7,10,.....
b)5,0,-1,-3,-7,.....c)2,3,5,7,11,13,17,.....
d).35,.5,.85,1.1,1.22,.....