Question 183193
Please help! I do not understand logarithms - I think the answer here is -7, but I'm not sure. I need to solve for y. Can you please give me step-by-step instruction? 
Log49 1/7 = y (log base 49)
{{{log(49,1/7) = y}}}
7 is the sqrt of 49, so 
{{{log(49,7) = 1/2}}}
The inverse, 1/7, makes it negative, so
y = -1/2