exam Maths Puzzle Numerical Ability

What is the range for P(x) = x^2 + 5x + 6 < 0?

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exam Other Question

What are the next five terms in this sequence?:
3,10,5,16,8,4,2,1,4.... ??? Could someone please help me on this...I am clueless.

On Saturday morning, Lynn walked
for 2 hours and then ran for 30 minutes. If she ran twice
as fast as she walked and covered 12 miles altogether,
then how fast did she walk?