exam Maths Puzzle Numerical Ability

Graph the function.
16)
f(x) =
4x + 2 if x < -2
x if -2 &#8804; x &#8804; 3
3x-1 if x > 3

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exam Other Question
How do you break down this word problem...and how do you solve

Dan is planning a dinner party for his office staff and their significant other. He goes down to the Union Hall an will you help me to understand how to solve simple equations such as this one: 2x+3=9.x=