exam Maths Puzzle Numerical Ability

Solve:
A ski lift has a seat suspended from a wire above. Three skiers with masses of 70 kilograms, 82 kilograms, and 20 kilograms are riding the lift. The seat itself has a mass of 17 kilograms. What is the total force exerted on the wire above?

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exam Other Question
Suppose a positive linear correlation is found between two quantities. Does this mean that one of the quantities increasing causes the other to increase? If not, what does it mean? can you please show me the steps on soloving this problem and its solution thank you!

x^2+24x+63=