Approximately what was the percent increase in the annual revenue from all greeting card sales from 1990 to 1993 ?

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问题 Approximately what was the percent increase in the annual revenue from all greeting card sales from 1990 to 1993 ?

选项 A、50%
B、45%
C、39%
D、28%
E、20%

答案D

解析 According to the bar graph, the annual revenue from all greeting card sales in 1990 was approximately $4.5 billion, and the corresponding total in 1993 was approximately $5.75 billion. Therefore the percent increase from 1990 to 1993 was approximately (100%), or approximately 28%. The correct answer is Choice D.
This explanation uses the following strategies.
Strategy 1: Translate from Words to an Arithmetic or Algebraic Representation
Strategy 4: Translate from a Figure to an Arithmetic or Algebraic Representation
Strategy 9: Estimate
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