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April 19, 2015

April 19, 2015

Posted by **Lucy** on Saturday, March 29, 2008 at 11:31am.

Use the equation of the exponential function whose graph passes through the points (0,-2) and (2,-50) to find the value of y when x= -2.

My answer: -2/25

Solve 64^x<32^x+2

Answer: x<10

Write the equation log(243)81=4/5

Answer: 243^4/5 = 81

Evaluate 9^log954

Answer: 6

Solve log(1/8)x = -1

Answer: 8

Solve log2(7x-3)>/= log2(x+12)

Answer: x>/=5/2

Thanks.

- Algebra II (#2 & 5) -
**drwls**, Saturday, March 29, 2008 at 1:21pm<<Solve 64^x < 32^(x+2) >>

64^x < 32^(x+2) = 32

(32*2)^x < 32^x * 32^2

32^x*2^x < 32<x * 32^2

2^x < 32^2 = 1024 = 2^10

x < 10

Good job!

<<Solve log(1/8)x = -1 >>

(1/8)^-1 = x

8 = x

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