exam Maths Puzzle Numerical Ability

y=2.1x+37 where y=percent recycled and x=the year number coded as 1990=1, 1992=3, 1994=5, and 2001=12. 1.) Is the slope positive or negatve? What does the slope tell us about the

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Write an algebraic expression that proves the difference of the square of any two odd numbers must be divisible by 8. definition of rational numbers and irrational numbers