Tanzina and David both repair computers. Tanzina charges $45 for a service call, plus $30/h for labour. David charges $40 for a service call, plus $30/h for labour. Write an equation for the cost, C, in dollars, of a service call in terms of the number of hours worked, t  for Tazina for David Who will earn more than $150 first?

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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Tanzina and David both repair computers. Tanzina charges $45 for a service call, plus $30/h for labour. David charges $40 for a service call, plus $30/h for labour. Write an equation for the cost, C, in dollars, of a service call in terms of the number of hours worked, t

  1.  for Tazina
  2. for David
  3. Who will earn more than $150 first?

 

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