Jane Alcorn decided to open a shop specializing inwomen's clothing. Sales were slow for the first few months.So, she decided to keep track of the monthly amount spent on advertising and the monthly sales as shown to the right. She used statistics to help find the equation that was a best fit for the data. The equation is shown as the straight line in the graph.

Estimate sales for advertising of $800 and $2400 if Sales equals $ 6000 plus $ 4.65 times Advertising Sales=$6000+$4.65Advertising.

The sales for advertising of $800 would be$

and the sales for advertising of $2400 would be $

.