C = 9/28 = 0.321
https://www.tiger-algebra.com/drill/3c-3/4=2c/3/
I believe you will sub. in 3 for t so h=-16(3)^2 + 60(3)+6. then you will just solve!
h=-16(9)+60(3)+6
h= -144 + 180 + 6
h= 42
so the answer to your question is c. 42 Feet
Hope this helps! :)
Polygon a figure especially closed figure having three or more sides usually straight side.
So the answer would be equilateral
2x^2 + 16x + 50 = 0
divide through by 2:-
x^2 + 8x + 25 = 0
(x + 4)^2 - 16 + 25 = 0
(x + 4)^2 = -9
x+4 = 3i or -3i
x = -4 + 3i , -4 - 3i