exam Maths Puzzle Numerical Ability

Marge can paint her house in 12 hours. If John helps her it takes them 9 hours. How long does it take John to paint the house by himself

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exam Other Question

hello,

how would i factor out the gratest common factor in this expression:

x ^3 - 5x

thank you!
Graph each of the following inequalities.


3. 3x – 4y > 12