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Mike paid $\$1.25$ for a stamp three years ago. He was just offered double that amount for the stamp. Assuming the stamp's offer price doubles every three years, how many dollars will he be offered in 12 more years?

 Jan 27, 2015

Best Answer 

 #3
avatar+128707 
+7

The stamp is now worth $2.50

So in 12 years, it will double  four times....so we have

2.50(2)^4 = $40  

 

 Jan 27, 2015

3+0 Answers

 #1
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0

$${\mathtt{1.25}}{\mathtt{\,\times\,}}{\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{x4}}$$

.
 Jan 27, 2015
 #2
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-1

what? IS the answer 200?

 Jan 27, 2015
 #3
avatar+128707 
+7
Best Answer

The stamp is now worth $2.50

So in 12 years, it will double  four times....so we have

2.50(2)^4 = $40  

 

CPhill Jan 27, 2015

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