Answer:
40 cubic units
Step-by-step explanation:
15 kobocoin =30.143471
4x²-9
4x²+6x-6x-9
2x(2x+3)-3(2x+3)
(2-3)(2x+3)
solution
(8x-3)(2x+3)
x>=3
5x-6>=9
5x>=9+6
5x>=15
x>=15/5