1. **State the problem:** Brenda burns 300 calories per hour playing soccer. We need to find how many calories she burns playing soccer for 80 minutes a day for 5 days. 2. **Convert minutes to hours:** Since Brenda burns calories per hour, convert 80 minutes to hours. $$80 \text{ minutes} = \frac{80}{60} \text{ hours} = \frac{4}{3} \text{ hours}$$ 3. **Calculate calories burned per day:** Multiply the calories burned per hour by the number of hours played per day. $$300 \times \frac{4}{3} = 300 \times 1.3333 = 400 \text{ calories per day}$$ 4. **Calculate calories burned in 5 days:** Multiply the daily calories burned by 5. $$400 \times 5 = 2000 \text{ calories}$$ 5. **Final answer:** Brenda burns **2000 calories** playing soccer for 80 minutes a day for 5 days.