_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​