Suppose a 4-minute overseas call costs $4.2 and a 17-minutes call costs $18.63. (a) Assume the rates are modeled by a linear function, what is the cost yof a call of x minutes duration? (round using two decimal places)

Suppose a 4-minute overseas call costs $4.2 and a 17-minutes call costs $18.63. (a) Assume the rates are modeled by a linear function, what is the cost yof a call of x minutes duration? (round using two decimal places)

College Algebra

7th Edition

ISBN:9781305115545

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter2: Functions

Section2.5: Linear Functions And Models

Problem 50E: Manufacturing Cost The manager of a furniture factory finds that it costs $2200 to produce 100...

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Question

can u help me

Suppose a 4-minute overseas call costs $4.2 and a 17-minutes call costs $18.63.
(a) Assume the rates are modeled by a linear function, what is the cost y of a call of x minutes duration?
(round using two decimal places)
y =
a.
Va
|al
sin (a)
(b) How long can you talk on the phone if you have $25.29 to spend?
Number
minuts

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