exam Maths Puzzle Numerical Ability

What is the slope of the line of best fit? use the point (1991, 230) amd (1997, 350)

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exam Other Question

evaluate if a=-3 b=3/4 and c= -1/2
c^2 - 2b -5a Joe rode his trial bike for over 10 miles. Two-thirds of the distance was over a mountain trail. How long is the mountain trail?