SOLUTION: 3x-y=12, then 8 to the power of x divided by 2 to the power of y equals what?

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Question 1044935: 3x-y=12, then 8 to the power of x divided by 2 to the power of y equals what?
Found 2 solutions by ikleyn, MathTherapy:
Answer by ikleyn(52787) About Me  (Show Source):
You can put this solution on YOUR website!
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3x-y=12, then 8 to the power of x divided by 2 to the power of y equals what?
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8%5Ex%2F2%5Ey = 2%5E%283x%29%2A2%5E%28-y%29 = 2%5E%283x-y%29 = 2%5E12 = 4096.


Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!
3x-y=12, then 8 to the power of x divided by 2 to the power of y equals what?
This is a question from the redesigned SAT. 

3x - y = 12_____y = 3x - 12

8%5Ex%2F2%5Ey______%282%5E3%29%5Ex%2F2%5Ey______2%5E%283x%29%2F2%5Ey ------- Changing base 8 to base 2

2%5E%283x%29%2F2%5E%283x+-+12%29 ------- Substituting 3x - 12 for y