​Café Michigan's​ manager, Gary​ Stark, suspects that demand for mocha latte coffees depends on the price being charged. Based on historical​ observations, Gary has gathered the following​ data, which show the numbers of these coffees sold over six different price​ values: Price Number Sold ​$2.70 770 ​$3.60 515 ​$2.10 990 ​$4.20 245 ​$3.20 315 ​$4.10 475 Using simple linear regressionLOADING... and given that the price per cup is ​$1.80​, the forecasted demand for mocha latte coffees will be nothing cups ​(enter your response rounded to one decimal​ place).