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10. A cellular phone service company charges 20 cents for each minute or part of a minute of airtime. If the total charge y is a function of the number of minutes x that Cora uses her phone, what is the range of this function? F {0, 1, 2, 3, 4, ...} G0 0

10. A cellular phone service company charges 20 cents for each minute or part of a minute of airtime. If the total charge y is a function of the number of minutes x that Cora uses her phone, what is the range of this function? F {0, 1, 2, 3, 4, ...} G0 0

College Algebra
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter2: Functions
Section2.1: Functions
Problem 87E
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B all integers C all whole numbers D all positive real numbers 10. A cellular phone service company charges 20 cents for each minute or part of a minute of airtime. If the total charge y is a function of the number of minutes x that Cora uses her phone, what is the range of this function? F {0, 1, 2, 3, 4, .. .} GO < y < 20 H {0, 20, 40, 60, .. .} Jy> 0 11. The daily cost of hiring a plumber, y, to work x hours on a repair project can be modeled using a linear function. The plumber charges a fixed cost of $80 plus an additional cost of $45 per hour. The plumber works a maximum of 8 hours per day. For one day of work, what is the range of the function for this situation? A0SXS8 B 80 sys 440 COSXS 10 D 45 sys 685 12
Transcribed Image Text:B all integers C all whole numbers D all positive real numbers 10. A cellular phone service company charges 20 cents for each minute or part of a minute of airtime. If the total charge y is a function of the number of minutes x that Cora uses her phone, what is the range of this function? F {0, 1, 2, 3, 4, .. .} GO < y < 20 H {0, 20, 40, 60, .. .} Jy> 0 11. The daily cost of hiring a plumber, y, to work x hours on a repair project can be modeled using a linear function. The plumber charges a fixed cost of $80 plus an additional cost of $45 per hour. The plumber works a maximum of 8 hours per day. For one day of work, what is the range of the function for this situation? A0SXS8 B 80 sys 440 COSXS 10 D 45 sys 685 12
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