Kim is planning for a product to retailers. Kim managed to pull out some past sales data shown as below. Please copy the data into Excel for your working.

Price ($) Volume 4.99 3,510 4.79 3,990 4.49 4,680 3.99 6,150 3.79 8,230 3.59 8,780

At the retail price of $3.19, how many units would Kim be able to sell if we fit the data with simple linear regression?

Describe the slope and the intercept in your response.

Now let's look at a particular retailer. The retailer estimates its annual sale volume will be 3,000. Assuming the ordering cost is $200/order, holding rate is 15%, with the advertised purchase price of $3.19.

How many units should the retailer order every time using the economic ordering quantity?

If the holding rate doubles, how will the order quantity change?