Accounts receivable turnover and days' sales in receivables For two recent years, Robinhood Company reported the following: 2019 20Y8 Sales $8,509,000 $7,139,000 Accounts receivable: Beginning of year 640,000 570,000 End of year 630,000 640,000 a. Determine the accounts receivable turnover for 2049 and 2078. Round your answers to one decimal place. 2018: 2079 b. Determine the days' sales in receivables for 2019 and 2078. Assume 365 days in a year. Round intermediate calculations and final answers to one decimal place. 2018: 2019: days days c. Are the changes in the accounts receivable turnover and days sales in receivables from 208 to 2049 favorable or unfavorable