Accounts receivable turnover and days$$ sales in receivables

For two recent years, Robinhood Company reported the following:

Line Item Description $20$Y$920$Y$8$

Sales $$7,514,500$ $$6,318,000$

Accounts receivable:

Beginning of year $570,000510,000$

End of year $560,000570,000$

a$.$ Determine the accounts receivable turnover for $20$Y$9$ and $20$Y$8.$ Round your answers to one decimal place.

$20$Y$8$: fill in the blank $1$ of $2$

$20$Y$9$: fill in the blank $2$ of $2$

b$.$ Determine the days$$ sales in receivables for $20$Y$9$ and $20$Y$8.$ Assume $365$ days in a year. Round intermediate calculations and final answers to one decimal place.

$20$Y$8$: fill in the blank $1$ of $2$

days

$20$Y$9$: fill in the blank $2$ of $2$

days

c$.$ Are the changes in the accounts receivable turnover and days$$ sales in receivables from $20$Y$8$ to $20$Y$9$ favorable or unfavorable?