Answer: quadratic
Step-by-step explanation:
9 + 9 = 18 + 9 = 27. 1/3 of 9 is 3 27 + 3 = 30
15 x 3 = 45. 1/3 of 15 is 5. So, 45 + 5 = 50.
The building is 50 feet tall.
Hoped this helped! :)
If you are doing it by factoring then the answer would be y^1(28x^2y^2-5)