Can someone plzzz help me.

9/10 divide by -3/15 as a mixed number

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?

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.