40 30 20 10 -10 10 20 30 David is a lifeguard and spots a drowning child 30 meters along the shore and 40 meters from the shore to the child. David runs along the shore for a while and then jumps into the water and swims from there directly to the child. David can run at a rate of 4 meters per second and swim at a rate of 0.9 meters per second. How far along the shore should David run before jumping into the water in order to save the child? Round your answer to three decimal places.

40 30 20 10 -10 10 20 30 David is a lifeguard and spots a drowning child 30 meters along the shore and 40 meters from the shore to the child. David runs along the shore for a while and then jumps into the water and swims from there directly to the child. David can run at a rate of 4 meters per second and swim at a rate of 0.9 meters per second. How far along the shore should David run before jumping into the water in order to save the child? Round your answer to three decimal places.

College Algebra

7th Edition

ISBN:9781305115545

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

ChapterP: Prerequisites

SectionP.9: Modeling With Equations

Problem 57E: Sharing a job betty and Karen have been hired to paint the houses in a new development. Working...

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