SOLUTION: Cell Phone service: Sprint PCS offers a monthly cellular phone plan for $39.99. It includes 450 anytime minutes and charges $0.45 per minute for additional minutes. The following f

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Question 791226: Cell Phone service: Sprint PCS offers a monthly cellular phone plan for $39.99. It includes 450 anytime minutes and charges $0.45 per minute for additional minutes. The following function is used to compute the monthly cost for a subscriber:
C(x)= { 39.99 if 0<_ x<_ 450
0.45x-162.51 if x>450
Where x is the number of anytime minutes used. Compute the monthly cost of the cellular phone for use of the following number of anytime minutes:
a) 200 b) 465 c)451
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Cell Phone service: Sprint PCS offers a monthly cellular phone plan for $39.99. It includes 450 anytime minutes and charges $0.45 per minute for additional minutes. The following function is used to compute the monthly cost for a subscriber:
C(x)= { 39.99 if 0<_ x<_ 450
0.45x-162.51 if x>450
Where x is the number of anytime minutes used. Compute the monthly cost of the cellular phone for use of the following number of anytime minutes:
a) C(200) = 39.99
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b) C(465) = 0.45*465 - 162.51 = 46.74
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c) C(451)= 0.45*451 - 162.51 = 40.44
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Cheers,
Stan H.
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