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10. Sally reasoned that if she drove 30 km/hr in one direction over a 180 km distance, and then returned traveling at 60 km/hr over the same distance, that her average speed must be half way between 30 and 60, which is 45 km/hr. Is she right? Why or why not?

10. Sally reasoned that if she drove 30 km/hr in one direction over a 180 km distance, and then returned traveling at 60 km/hr over the same distance, that her average speed must be half way between 30 and 60, which is 45 km/hr. Is she right? Why or why not?

Calculus: Early Transcendentals
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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10. Sally reasoned that if she drove 30 km/hr in one direction over a 180 km distance, and then returned traveling at 60 km/hr over the same distance, that her average speed must be half way between 30 and 60, which is 45 km/hr. Is she right? Why or why not?
Transcribed Image Text:10. Sally reasoned that if she drove 30 km/hr in one direction over a 180 km distance, and then returned traveling at 60 km/hr over the same distance, that her average speed must be half way between 30 and 60, which is 45 km/hr. Is she right? Why or why not?
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