Question 1054906
i.  Find an expression for y in terms of x, if 
log 4 + log(x – 1) = 3log y
log(4(x-1)) = 3log(y)
log(y) = log(4x-4)/3
y = 10^((4x-4)/3)
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    ii.  Solve the system of equations
         log 4 + log(x – 1) = 3log y
           2y – x = 3
Sub for y
2*10^((4x-4)/3) – x = 3
-- No algebraic solution.
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   iii.  Solve for x, log2(2x – 1) = 8
{{{log(2,(2x-1)) = 8}}}
2x-1 = 2^8 = 256
2x = 257
x = 257/2
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