I think its A please dont get mad if its wrong
Substituting -3 for x, we have: (-3)^2-3*-3-7. This simplifies to 9+9-7, or 11.
Both the x and y have to be greater than zero so you need to add two inequalities, x>0, y>0
Answer:
2.6 million cubic metres
Step-by-step explanation:
please kindly check the attached file for explanation