exam Maths Puzzle Numerical Ability

directions....find the sum and product of the roots of each quadratic equation.

x^2+8x=-7

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exam Other Question

What is the range and the first and third quartiles of the data set?

14,16,12,15,22,18,16,10,12

A. 22,12,17 B. 22,15,17 C. 12,12,17 D. 12,12,15 Please help me answer this: abs(4a+7)<13
I got -5