On a trip of d miles to another city, a truck driver's average speed was x miles per hour. On the return trip, the average speed was y miles per hour. The average speed for the round trip was 60 miles per hour. 30x x - 30 Average speed= (a) Verify that y= 60 = 60y + 60x 60x 60x = Total distance Total time =y (d/x) + (d/y) - 60y (x-30) What is the domain? (Enter your answer using interval notation.) (b) Complete the table. (Round your answers to three decimal places.) 35 55 (c) Find the limit of y as x approaches 30 from the right. (If an answer does not exist, enter DNE.)

On a trip of d miles to another city, a truck driver's average speed was x miles per hour. On the return trip, the average speed was y miles per hour. The average speed for the round trip was 60 miles per hour. 30x x - 30 Average speed= (a) Verify that y= 60 = 60y + 60x 60x 60x = Total distance Total time =y (d/x) + (d/y) - 60y (x-30) What is the domain? (Enter your answer using interval notation.) (b) Complete the table. (Round your answers to three decimal places.) 35 55 (c) Find the limit of y as x approaches 30 from the right. (If an answer does not exist, enter DNE.)

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter4: Polynomial And Rational Functions

Section4.5: Rational Functions

Problem 4E

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