exam Maths Puzzle Numerical Ability

. List all possible rational roots of
f (x) = 12x4 � 67x3 + 108x2 � 47x + 6.

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exam Other Question

Could someone please show me how to do this. Thank You.

Solve the quadratic inequality by graphing an appropriate quadratic function.

x^2-2x-8 (less than or equal to sign)0 From 1990 to 1993, the number of truck registrations (in millions) in the united states can be approximated by the model R=0.29t^2+45 where t is the number of years since 1990. During which year were approximately 46.16 million trucks registered.