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Two long straight roads, one running East-West, and the other running North-South meet at a point O. At 12:00noon, bicycler Bob is on the E-W road at a point 100 kilometers East of O, while runner Renee is at point O. At this time Bob starts riding towards point O and Renee starts running North. Bob bikes at a constant rate of 30 kilometers/hour and Renee runs at a constant rate of 15 kilometers per hour. How fast is the distance between them changing at 2:00pm? Input the number only (no units).

Two long straight roads, one running East-West, and the other running North-South meet at a point O. At 12:00noon, bicycler Bob is on the E-W road at a point 100 kilometers East of O, while runner Renee is at point O. At this time Bob starts riding towards point O and Renee starts running North. Bob bikes at a constant rate of 30 kilometers/hour and Renee runs at a constant rate of 15 kilometers per hour. How fast is the distance between them changing at 2:00pm? Input the number only (no units).

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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Two long straight roads, one running East-West, and the other running North-South meet at a point O. At 12:00noon, bicycler Bob is on the E-W road at a point 100 kilometers East of O, while runner Renee is at point O. At this time Bob starts riding towards point O and Renee starts running North. Bob bikes at a constant rate of 30 kilometers/hour and Renee runs at a constant rate of 15 kilometers per hour. How fast is the distance between them changing at 2:00pm? Input the number only (no units).
Transcribed Image Text:Two long straight roads, one running East-West, and the other running North-South meet at a point O. At 12:00noon, bicycler Bob is on the E-W road at a point 100 kilometers East of O, while runner Renee is at point O. At this time Bob starts riding towards point O and Renee starts running North. Bob bikes at a constant rate of 30 kilometers/hour and Renee runs at a constant rate of 15 kilometers per hour. How fast is the distance between them changing at 2:00pm? Input the number only (no units).
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