Answer:
pounds
Step-by-step explanation:
10³ = 10(10)(10) = 1000
4.5(1000) = 4500
4500 grams would be much too small for a car.
4500 tons would be 4500(2000) = 9000000 pounds; this would be much too large for a car.
4500 ounces would be much too small for a car.
4500 pounds, however, is about the right size for a car.
