book Maths Puzzle Numerical Ability

I need lots of help in math, my teacher said im doing alegbra 1 but it is also alegbre 2. I dont understand any of it. Not the equation part nor the inequalities. Could you pleas elp me out

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book Other Question

Compare the area of a circle with a radius of 10 units and the area of an ellipse with a major axis of 10 and a minor axis of 6. Show what equations you use to find the area od each figure and then compare each. If a regular polygon has an ecterior angle of 18 degrees, how many sides would that polygon have?

and

If a regular polygon has an interior angle of 135 degrees, how many sides would that polygon have?

Please help me
Reanne