exam Maths Puzzle Numerical Ability

the product of nine and the quanity 5 more than a number tis less than 6

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please help me. i cant figure out how to do this. thank you for your time in trying to figure this out!
compare the graph of the function with the graph of f(x)=square root x.
y=-squarerootx Let {a1,...,ap} be a set of vectors from R^n. If a1=x2a2+...+xpap where x2...xp are scalars, then span(a1...ap) = span(a2...ap). I need assistance showing that this statement is true.