Posted by Lucy on .
Please check answers:
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(7x3)>/= log2(x+12)
Answer: x>/=5/2
Thanks.

Algebra II (#2 & 5) 
drwls,
<<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