book Maths Puzzle Numerical Ability

inequalities and thier graphs:solving one step equations and inequaliites:

trying to help teenage child with problems getting confused..


1)graph.... -7 > w ?

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book Other Question
solve -8x<=2
 David can type a 50 page paper in 8 hours. Last month David and Andy together typed a 50 page paper in 6 hours. How long would it take Andy to type a 50 page paper on his own?

Thank you