Statistics students in Oxnard College sampled 11 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 (x) Cost(y)

815 47.75

574 21.7

674 44.7

587 23.35

747 46.35

939 38.95

445 27.25

358 20.9

866 46.3

277 21.85

496 25.8

A student calculates a linear model

y=______x________+. (Please show your answers to two decimal places)

Use the model to estimate the cost when number of pages is 522.

Cost = $___________(Please show your answer to 2 decimal places.)