a passenger car weighs 4.5x10³ units. which unit of measure was used? grams ounces pounds tons

Explanation:

Step1: Convert grams to pounds

1 gram is approximately 0.0022 pounds. So, $4.5\times10^{3}$ grams is $4.5\times10^{3}\times0.0022 = 9.9$ pounds, which is too light for a car.

Step2: Convert ounces to pounds

1 ounce is 0.0625 pounds. So, $4.5\times10^{3}$ ounces is $4.5\times10^{3}\times0.0625=281.25$ pounds, which is too light for a car.

Step3: Consider pounds

$4.5\times 10^{3}=4500$ pounds is a reasonable weight for a passenger - car.

Step4: Consider tons

1 ton is 2000 pounds. So, $4.5\times10^{3}$ tons is $4.5\times10^{3}\times2000 = 9\times10^{6}$ pounds, which is too heavy for a car.

Answer:

pounds