Can someone help me with this? What is the nth term of the sequence if it's t^2-1, 2t^2, 3t^2+1, 4t^2+2

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.

The graph of f(x) = |x| is transformed to g(x) = |x + 11| - 7. on which interval is the function decreasing?

The median for the given set of six ordered data values is 29.5 9 12 25 __ 41 48 what is the missing value?