A retailer of DVD players knows that at a price of q dollars per player, he can sell (900 – 3q) players per month. Write a polynomial, in function notation, that represents the monthly income from the sale of DVD players.

f(q) = (900 - 3q)(g)

= 900 q - 3q^2

To calculate the monthly income from the sale of DVD players, we need to multiply the price per player by the number of players sold.

Let's break down the problem:

- "q dollars per player" represents the price for each DVD player.
- "900 - 3q" represents the number of players that can be sold each month. As the price increases, the demand for players decreases.

To calculate the monthly income, we multiply the price per player (q) by the number of players sold (900 - 3q):

Income(q) = q * (900 - 3q)

Using function notation, we can express this as:

Income(q) = q(900 - 3q)

Thus, the given polynomial, in function notation, that represents the monthly income from the sale of DVD players is: Income(q) = q(900 - 3q)