Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below: Number of Pages (I) Cost(y) 270 34.6 621 53.68 322 35.76 490 45.2 843 85.44 854 81.32 961 100.88 668 63.44 502 49. 16 A student calculates a linear model y = (Please show your answers to two decimal places) Use the model to estimate the cost when number of pages is 863. Cost = $ Please show your answer to 2 decimal places.)