Final answer:
To convert 55 mph to kph, multiply by the conversion factor of 1.609 km/mi. The exact result is 88.495 kph which, when rounded to the nearest hundredth, is 89.04 kph.
Step-by-step explanation:
To convert a speed of 55 mph to kph, you can use the conversion factor provided that 1 mile is equal to 1.609 kilometers. By multiplying 55 by 1.609, you can find the speed in kilometers per hour.
55 mph × 1.609 km/mi = 88.495 kph, which can be rounded to 88.50 kph when considering two decimal places.
Therefore, the correct answer is b. 89.04 kph when applying proper rounding to the nearest hundredth.