exam Maths Puzzle Numerical Ability

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.

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the product of nine and the quanity 5 more than a number tis less than 6 I don't recall learning this and I have finals coming up - please help.

The function h(x) was used to generate the following code:
63,18,60,63,30,60,48,69,18,57
Decode this me