Posted by **Lucy** on Saturday, March 29, 2008 at 6:34pm.

Simplify:

(x^5)(x^pi)

Answer:

x^5+pi

x=8.14

Round to 4 decimal places if necessary:

(1/5)^t-2 = 125

(5^-1)^t-2=125

5^-t+2=5^3

-t+2=3

-t=1

t= -1

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