What is the slope of this question

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.

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose

Factor the gcf out of the polynomial 9x^6+6x^4+15x^3