Work out 2/7 divided 7/8

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

Find the smallest number by which the given number should be divided to make a perfect cube(with steps or the answer will get reported) a.108 b.2187

Which spreadsheet would be used to compute the first nine terms of the geometric sequence a^n=32•(1/2)n-1