Mr. James McWhinney, president of Dantel-James Financial Services, believes there is a relationship between the number of client contacts and the dollar amount of sales. To document this assertion, Mr. McWhinney gathered the following sample Information The X column indicates the number of client contacts last month, and the Y column shows the value of sales ($ thousands) last month for each client sampled Sales (5 thousands) Number of Contacts, Sales (5 thousands), Number of Contacts X 35 17 19 13 32 CAS 22 34 23 38 se 22 19 32 25 534 32 30 50 30 6. Not available in Connect b. Determine the regression equation. (Do not round Intermediate calculations and round the final answers to 4 decimal places, Negative answers should be indicated by a minus sign.) a Ya c. Determine the estimated sales if 35 contacts are made. (Round the final answer to 4 decimal places.)