A mobile phone distributor company has recently entered the phone assembling business. They want to study the sales trends in a certain area. From their past record of the distribution business, they know the volume of their annual sales in the Saddar area of Karachi city depends on the total income of all the earners in the area. The sales figures for past 10 years are shown in the following table. If the total income of all earners in Saddar is PKR 20 billion, what would be the predicted value of the company sales? Total Income in Saddar Area (Billion rupees) 11 15 16 13 18 21 22 Company's Sales (Billion rupees) 0.7 1.1 0.4 0.9 1.0 1.2 1.5 1