Thanks a lot for that explanation, had me confused for a decent amount of time but now I have a much better understanding and can solve them on my own!
I know I’m seven months late, but that it what your a*b^x is. For example, in her coyote example, (15(3)^x), when x equals 1, the number of coyotes is 45. When d is 3, the number is 405, and so on.