exam Maths Puzzle Numerical Ability

Graph the inequality.
3x + y_<_5

Of course the line is a solid line under the < If someone could help me with this problem AND how to write the < with a line under it I would appreciate it.

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Please help me sole this: FIND THE DOMAIN OF THIS FUNCTION: h(x)=10/(x^2-2x). difference between a single means hypothesis test and a two means hypothesis test