The demand equation for the Widget Company has been estimated to be:

Q = 20,000 + 10 I - 50P + 20 PC

where Q = monthly number of widgets sold, I = average monthly income, P = price of widgets, and PC = average price of competing goods.

a. If next month's income is forecast to be 2,000, the price of competing goods is forecast to be $20, and the price of widgets will be set at $30, forecast sales.
b. What will sales be if the price is dropped to $20?

a. The forecast for sales is 38,900.
b. The forecast for sales will be 39,400.