In 2016, taxicabs in Los Angeles charged an initial fee of $2.85 plus $2.70 per mile. In equation form, Fare Fare = 2.85 + 2.7(miles). At the end of a month, a businessman collects all his taxicab receipts and calculates some numerical summaries. The mean fare he paid was $15.45 with a standard deviation of $10.20. What are the mean and standard deviation of the lengths of his cab rides in miles?