exam Maths Puzzle Numerical Ability

How many sides does a convex polygon have if the sum of the degrees of the interior angles in the polygon is 45 more than 45 times the number of diagonals of the polygon?

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exam Other Question
I have to match y (less)1/3x+2 with A,B,C find four consecutive odd integers such that the sum of the first and fourth is 55 greater than the opposite of the third