Posted by **Michelle** on Tuesday, May 19, 2009 at 2:14pm.

Please Simplify

( 3x^5 y^-8)^4 )

(------------- )

( z^-2 )

- Algebra -
**DrBob222**, Tuesday, May 19, 2009 at 3:48pm
I would eliminate the exponent (4) and move Z^-2 to the numerator and y^-8^4 to the denominator.

81X^20*Z^2/y^32

- Algebra -
**Demi**, Tuesday, May 19, 2009 at 5:28pm
How long will it take to earn $525 in interest if $3500 is invested at a 6% annual interest rate?

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