exam Maths Puzzle Numerical Ability

Graphing function :

f(x)= (2x)/(x^2+5x+4)

Please help.. I have no idea! THANK YOU!!!

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exam Other Question

The 42km drive from Oakdale to Ridgemont usually takes 28 min. Because highway construction requires a reduced speed limit, the trip now takes 14 min longer. Find the reduced speed limit in km/h. Hi May I have some help with this inequality?

Solve the inequality. Express the solution using interval notation.

abs((x-1)/9) < 2