exam Maths Puzzle Numerical Ability

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

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exam Other Question

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. 8x to the square root of 4 y to the square root of 2 divided by 3z to the square root of 3 times 9xy to the square root of 2 z to the square root of 6 divided by 4y to the square r