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For the distance formula, 90 minutes must be written as:

A1.5 hours
B0.9 hours
C90 hours
D9.0 hours
Answer & Solution
Correct answer: A. 1.5 hours
1. Units must match the rate. 2. Divide 90 by 60. 3. That is 1.5 hours. _Source: OpenStax Elementary Algebra 2e, Chapter 3, Uniform Motion Applications (CC BY 4.0)._
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