Question

A new company estimates its total profit (profit = total revenue minus total cost) as P(x) = x4 – 2x3 – 240x – 35, where P is in hundreds of dollars and x is the number of months elapsed since the company’s start-up. According to the rational zero theorem, what can be the values of x until the company breaks even?

Answer 1

factors of -35 ....

Answer 2

rational zero says that last/first coeffs make up a pool of possible zeros