exam Maths Puzzle Numerical Ability Trigonometry

find the slope of a line containing (-5,-3) & (7, -2)

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exam Other Question

Find the sum of the measures of the interior angles of a convex polygon with the given number of sides.

Number of sides-->4

Correct answer would really be appreciated:)
laura is 6 years older than theresa, In 2 years laura will be twice as old as theresa.Find their ages .