exam Maths Puzzle Numerical Ability

instructions:

Graph in a coordinate plane
17. y<2x^2-4x+1

i have no idea how to simplify nor graph..

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exam Other Question

Greg spent 1/4 hour (h) responding to emails and 5/8 h returning phone calls. How much time did he spend on the two activities? If 12 is subtracted from three times a number and the difference is multiplied by 2, the result is -42. Find the number.