Answer:
Step-by-step explanation:
Look what happens if you do the multiplication of P(x):
P(x) = x^3 - 9x
This is a variation of the basic cubing function y = x^3.
The graph begins in QIII and ends in QI; in other words, if you go left the graph drops; if you go right, the graph rises (without limit, in both cases).
Answer:
9
Step-by-step explanation:
Cross Multiply: 
Simplify: 4x=36
x=9
The answer is y equals 0.85 x. Hope this help you