Answer:
if I'm not mistaken it would be A, I'm not entirely too sure though
Answer:
the answer is A,
P(x) = -0.4x³+100x²-900x+500
Step-by-step explanation:
monthly cost:

monthly revenue:

profit function:


i) remove the first bracket

ii) there is a negative sign, '-' in front of the second bracket. so, change the sign of each term of the expression inside the bracket

iii) collect like terms

iv) simply the like terms

Answer:
Step-by-step explanation:
Answer: c
Step-by-step explanation:
The best answer to your question would have to be -40x - 50