exam Maths Puzzle Numerical Ability

Can someone please help me with solving these problems.Can you show me the steps to get the answer before you graph.

Graph the solution set for each of the following:

1) 2x +

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exam Other Question

Im trying to help my son, but I cant figure it out. Please Help.
Find two consecutive intergers so that the sum of the first and 3/4 of the second is 6. find the value of a such that w^2-18w+a is a perfect square.