book Maths Puzzle Numerical Ability

Can someone please help with the following qustion. My 13 year old daughter brought this home on a worksheet and we are arguing about the answer. Math (algebra or anything with l

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Need Help please!
2) Use the geometric sequence of numbers 1, 3, 9, 27, � to find the following:
a) What is r, the ratio between 2 consecutive terms?
Answer:
Show work in th please help me im doing my homework can you help me on this.

(-2n)(-n^2)