Early in 2020, Nash Equipment Company sold 500 Rollomatics at $6,300 each. During 2020, Nash spent $20,000 servicing the 2-year assurance warranties that accompany the Rollomatic. All sales transactions are on a cash basis. (a) Prepare 2020 entries for Nash. Assume that Nash estimates the total cost of servicing the warranties in the second year will be $34,000. (If no entry is required, select "No Entry" for the account titles and enter 0 for the amounts. Credit account titles are automatically indented when amount is entered. Do not indent manually. Record journal entries in the order presented in the problem.)