A phone company charges P39 for the first 10 minutes of an international long distance phone call and P 12 per minuteafter that. Find the cost function C(X)as a function of the length of phone call in X minutes.39C(x) =if 0 10A12C(x)% =if 0 1039C(x) =Dif xs 1039+(12x-1) if x> 10

Given that: Charges for first 10 min=P39Charges after first 10 min=P12 per min

none company charges P39 for the first 10 minutes of an international long distance phone call and P 12 per minute er that. Find the cost function C(X) as a function of the length of phone call in X minutes. 39 C(x) = if 0 10 if 0 10 12 B C(x)= if xs 10 39 C(x) = 39+(12x-1) if x> 10

none company charges P39 for the first 10 minutes of an international long distance phone call and P 12 per minute er that. Find the cost function C(X) as a function of the length of phone call in X minutes. 39 C(x) = if 0 10 if 0 10 12 B C(x)= if xs 10 39 C(x) = 39+(12x-1) if x> 10

Algebra and Trigonometry (MindTap Course List)

4th Edition

ISBN:9781305071742

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter2: Functions

Section2.4: Average Rate Of Change Of A Function

Problem 4.2E: bThe average rate of change of the linear function f(x)=3x+5 between any two points is ________.

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Question

A phone company charges P39 for the first 10 minutes of an international long distance phone call and P 12 per minute
after that. Find the cost function C(X)
as a function of the length of phone call in X minutes.
39
C(x) =
if 0<x<10
12x-81 if x> 10
A
12
C(x)% =
if 0<x<10
12 + (39x- 120) if x> 10
39
C(x) =D
if xs 10
39+(12x-1) if x> 10

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