exam Maths Puzzle Numerical Ability

Please help me simplify.
x^2+6x-27/3-x. The book says the answer is -(x+9)

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exam Other Question

Graph each of the following inequalities

4x + y > 4 (There is a line (___) under the > I just do not no how to do it.)
I am also confused by how a make/draw a graph into Micro Find the median for the following:

1, 12, 45, 34, 21, 60, 15