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OpenStudy (2yoututu11):
The cost per minute of a conference phone call, originally $2.80, increased by 20%. What is the new price? A. $3.00 B. $3.20 C. $3.26 D. $3.36
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OpenStudy (tkhunny):
Original Cost: $2.80 Increase: 20% of $2.80 = 0.28 * $2.80 Now what?
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