book Maths Puzzle Numerical Ability

Christy spent $500 over her budget on gifts during the holidays. In addition to her regular job, she took a part time job at the Pharamacy that paid $10 per hour. Her schdule would

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I'm supposed to graph 2y-4x<8 but dont know how to find the x and y points. I need to find the total surface area of a stand that was cut from a right circular cone (now called a frustum of a cone).

The height is 40 cm,bottom radius is 100 cm, and the top radius is 60 cm.