exam Maths Puzzle Numerical Ability

I have to match y (less)1/3x+2 with A,B,C

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exam Other Question

The sum of three numbers is 8. Twice the smallest is 2 less than the largest, and the sum of the largest and smalles is 5. Use linear system in three variables to find the three numbers. 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?