No handwritten work please

4.46 The following data relate the sales figures of the bar in Mark Kaltenbach's small bed-and-breakfast inn in Portand, to the number of guests registered that week: s, el of WEEK 1 GUESTS 16 BAR SALES $330 2. 12 270 1- e 3 18 380 4 14 300 a) Perform a linear regression that relates bar sales to guests (not to time). b) If the forecast is for 20 guests next week, what are the sales expected to be? PX