Posted by **Hunter** on Sunday, January 1, 2012 at 7:18pm.

Change the exponentional expression to an equivalent expression involving a logarithm.

(2x)^-10=4

- Algebra HELP -
**Damon**, Sunday, January 1, 2012 at 8:05pm
-10 log 2x = log 4

- Algebra HELP -
**Reiny**, Sunday, January 1, 2012 at 8:09pm
I always encouraged my students to memorize this statement

2^{3} = 8 <------> log_{2</sub) 8 = 3
that way you will be able to convert easily in either direction
log (2x)4 = -10
}

- let me try this again - Algebra HELP -
**Reiny**, Sunday, January 1, 2012 at 8:11pm
2^{3} = 8 <-----> log _{2} 8 = 3

log_{2x} 4 = -10

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