exam Maths Puzzle Numerical Ability

A garden area is 30 ft long and 20 ft wide. A path of uniform width is set around the edge. If the remaining garden area is 400 square foot, what is the width of the path?

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exam Other Question

I have to graph the following inequality 4x + y > 4

4(0) + 0 > 4
0 > 4

Am I doing this right or am I missing something? Could someone graph this problem for me?

Graph the inequality:
3x + y <=5

I would appreciate it allot.
Thanks,
Jamie