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2. Revenue is given by the equation R=xp where x represents the number of units sold and p is the selling price.
The marketing department analyzed its sales and has determined that the expression 21,000‒150p represents the number of units, x, sold.

1) Define the functions given in this situation.
2) Combine the functions in a way to represent the function that will help the marketing firm determine the maximum revenue.

3. Use the parent function for the absolute value function: f(x)=|x|

Let b=‒2. Consider the following transformations:
f(x)+b
b•f(x)
f(bx)
f(x+b)

1) Graph the parent function and each of the transformations in the coordinate plane and label each one.
2) Describe how each one transforms the parent function.