The upper bound is 267.9 and the lower bound is 226.1.
<h3>What is the upper and lower bound?</h3>
At the beginning of the journey, the possible values of the milometer before been rounded to the nearest mile are: 43,561.5, 43,561.6, 43,561.7, 43,561.8, 43,561.9, 43,562,43,562.1, 43,562.2, 43,562.3, 43,562.4
At the end of the journey, the possible values of the milometer before been rounded to the nearest mile are: 43,828.5, 43,828.6, 43,828.7, 43,828.8, 43,828.9, 43829, 43829.1, 43829.2, 43829.3, 43829.4.
Upper bound = 43,829.4- 43,561.5 = 267.9
Lower bound = 43,828.5 - 43,562.4 = 226.1
To learn more about subtraction, please check: brainly.com/question/854115
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