Question 821847
<pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
log10((x+1)^-5)=-15
{{{-5log(10,(x+1)) = -15}}}
{{{log(10,(x+1)) = 3}}}
    (x+1) = 10^3
      x + 1 = 1000
         x = 999
*[tex \large\ \ log_b(x) \ = \ y \ \ \Rightarrow\ \ b^y = x]
*[tex \large\ \ nlog_bx = log_b(x^n) ]
*[tex \large\ \ log_bx + log_by = log_b(xy) ]
*[tex \large\ \ log_bx - log_by = log_b(x/y) ]
*[tex \large\ \ log_b1 = 0]
*[tex \large\ \ log_bb = 1]