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Lucas
07-12-2013, 04:00 PM
SAT math question about Exponents

I'd like to help me to the following sat math question

Find the value of 4^{2x}, given that 4^x=8.

Thanks!!:D

elizabeth
07-12-2013, 04:08 PM
SAT math Exponential

First take a look to this revision notes about Exponents

http://www.ibmaths4u.com/Exponential%20and%20Logarithmic%20function.pdf

Starting with 4^x=8

square both sides 4^{2x}=8^2

and finally you get 4^{2x}=64

Hope these help!!:D

Lucas
07-12-2013, 04:09 PM
Thanks Elizabeth!!