Decreasing by 17.3 percent means every year it's multiplied by 1-0.173 =0.827.
Choice B
Yes because 235 never needs to be in 3square
d + 8 = 1/4(x-9)
d + 8 = 1/4x - 9/4
- 8 - 8
------------------------------
d = 1/4x - 17
I just realized that this is not the answer you are looking for. It's an equation, not a value. Sorry about that.