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An automobile deler Ses TV advertising to promote car sales. On the basis of past records, the dealer arrived the following Gata, where is the number of ads placed monthly and is the number of cars sold that month Use the data to the right tower parts (A) and (B) Number of Ads Number of Cars x 10 310 12 324 10 380 28 505 35 601 41 1 50 782 W) Enter the data in a graphing calculator and find a cubic regression equation for the number of cars old momenty on a function of the number of ads. - (Use wes or decimals for any numbers in the expression Round to three decimal places as needed) (B) How many ads should the deale place each month to maximize the rate of change of sales with respect to a number of sand how many cars can the respect to set with this number of a The dealer should place ads and expect to sell cars per month (Round to the nearest Integer as needed)