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_28. Any symbol representing one fixed value that does not change is called A. equation B. constant C. variable D. expression _29. What do you call to the letters or symbols that represents a number? B. constant C. variable D. expression A. equation Erica is y years old now. _30. Which represents Erica's age 5 years from now. A. y + 5 B. 5+ y C. y - 8 D. X + 9 _31. Which represents Erica's age 2 years ago. A. y +2 B. y-2 C. yx2 D. y + 2 D. 455 km 32. What is the distance travelled? 7 hours at 65 km/h A. 58 km B. 72 km C. 400 km _33. What is the average speed? A. 8 m/s B. 10 m/s 800 meters in 80 seconds C. 16 m/s D. 25 m/s 34. Find the distance travelled. A. 25 km B. 45 km 0.5 hours in 50 km/h C. 55 km D. 250 km 35. What is the distance travelled? 2 hours at 30 km/h A. 15 km B. 28 km C. 32 km D. 60 km _36. A car travels 360 kilometers in 4 hours. What is the average speed of the car? A. 90 kph B. 356 kph D. 400 kph C. 364 kph _37. A car travelling at an average speed of 100 kilometers per hour made the trip to a certain to in 7 hours. What is the total distance traveled by the car? A. 400 km B. 500 km C. 600 km D. 700 km _38. A bus traveled with a constant speed of 80 kilometers per hour. How long would it take to tra 320 kilometers? A. 4 hours B. 5 hours C. 6 hours D. 7 hours _39. A train travels 675 kilometers in 2.5 hours. What was its speed? A. 260.1 km/hr B. 270.1 km/hr C. 280.1 km/hr D. 290.1 km/hr 2 40. Beth drove her car and travelled 385 kilometers in 3 hours. What was her average spee A. 90 km/hr B. 100 km/hr C. 110 km/hr D. 120 km/hr
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