exam Maths Puzzle Numerical Ability

i want to sole this problem -3 is less than or equal to x and x is less than or equal to -1 it looks something like this -3<_x<_-1

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exam Other Question

Graph each function for the primary wave. Label the coordinates of each point graphed. a) y=-2sin(3x-(pie/2))+1
b) y=20+7cos((3pie/4x)+(3pie/4)) Evaluate: |-30|x|1/5 - 1/3|