A) the length on the top is 2ft. You were supposed to subtract 11ft from 9ft. The length on the bottom is 17. You get that by adding 5ft and 12ft
b) then you add up all the lengths together.
2+5+12+11+9+17= 56ft
The answer is 9x^3-6x^2+3x
Answer:
I believe 4 but I'm not that good at math but 4