<PRE><B>Question 1176286</B>
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Hi
Question States:
C(200min) = $20.00  + $0.75*100 = $95
C(250min) = $95 + $0.10*50 = $100

For x ≥ 200min, C(x) = $95 + $0.10(x - 200)

Wish You the Best in your Studies.
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