Republic Services, Inc. RSG is scheduled to report first-quarter 2021 results on May 5, after market close.Let’s check out how things have shaped up for the announcement.Q1 ExpectationsFavorable impact of acquisitions is likely to have aided Republic Services' first-quarter 2021 revenues, the Zacks Consensus Estimate for which stands at $2.61 billion, indicating growth of 2.3% from the year-ago quarter’s reported figure.The Zacks Consensus Estimate for earnings is pegged at 86 cents per share, indicating growth of 11.7% from the year-ago quarter’s reported figure.What Our Model SaysOur proven model does not conclusively predict an earnings beat for Republic Services this time around. The combination of a positive Earnings ESP and a Zacks Rank #1 (Strong Buy), 2 (Buy) or 3 (Hold) increases the odds of an earnings beat. You can uncover the best stocks to buy or sell before they're reported with our Earnings ESP Filter.Republic Services has an Earnings ESP of -1.75% and a Zacks Rank #2.Republic Services, Inc. Price and EPS Surprise Republic Services, Inc. price-eps-surprise | Republic Services, Inc. QuoteStocks to ConsiderHere are a few stocks from the broader Zacks Business Services sector that investors may consider, as our model shows that these have the right combination of elements to beat on first-quarter 2021 earnings.BGSF BGSF has an Earnings ESP of +33.33% and a Zacks Rank #2. You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.Avis BudgetCAR has an Earnings ESP of +15.22% and a Zacks Rank #3.Fidelity National Information Services FIS has an Earnings ESP of +2.01% and a Zacks Rank #3.Breakout Biotech Stocks with Triple-Digit Profit PotentialThe biotech sector is projected to surge beyond $775 billion by 2024 as scientists develop treatments for thousands of diseases. They’re also finding ways to edit the human genome to literally erase our vulnerability to these diseases.Zacks has just released Century of Biology: 7 Biotech Stocks to Buy Right Now to help investors profit from 7 stocks poised for outperformance. Our recent biotech recommendations have produced gains of +50%, +83% and +164% in as little as 2 months. The stocks in this report could perform even better.See these 7 breakthrough stocks now>>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Avis Budget Group, Inc. (CAR): Free Stock Analysis Report Fidelity National Information Services, Inc. (FIS): Free Stock Analysis Report Republic Services, Inc. (RSG): Free Stock Analysis Report BGSF, Inc. (BGSF): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research