Math
posted by Jon .
I do not understand how to figure out my problem below and can not find an example in my book. Can someone give me a suggestion on how I can arrive at my answer.
Problem:
Write a system of inequalities whose solution set is the region shown.
graph

Hard to say without seeing the graph.
If for example the domain between 4 and + 4 is shown with big black dots at the end, then your answer would be :
x</=4
or
4 </= x </= +4
If it was from 5 to +7 then:
5</= x </= +7
If it is outside the domain from 4 to +4 (to the left of 4 and to the right of +4 ) then
x>4
etc etc etc 
I need to do the shaded area which starts at (3,1) and continues to expand negatively. (3,1) is the start(like the start of a neck tie) and expands to the end of the tie growing each section.

I have
one line on the y axis runs through (0,5), slope down 2 over 1. Other line goes through y axis at (0,2) or on x axis at (2,0) with slope down 2 over 3. 
i am in the 5th grade my question is write each number in two other forms, 10+ 4+ 0.05