exam Maths Puzzle Numerical Ability

I do not understand these inequalities.. Please help me..

Solve for x: Graph the solution
A) 5-2x>15
B) |4-x|<6
C) |2x-5|-4=6 Does not need graphed
D) |3x-1|+6=4 Does not need graphed.

Thankyou so much.. Kelly

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exam Other Question
Factor 5a^2-2ab-7b^2 if h(x)=X3 andg(x)=1/x+5 find(g(x)) and g(h(x))