Concept explainers
Reminder: Round all answer to two decimal places unless otherwise indicated.
a. Use a formula to express the world record time as a function of the time since 1950. Be sure to explain the meaning of the letters you choose and the units.
b. Express using functional notation the world record time in the year 1955, and then calculate that value.
c. Would you expect the formula to be valid indefinitely? Be sure to explain your answer.
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