Hey guys, need help with this

1. Suppose that f(x) = $\displaystyle \log_{3} (x-1) $

a. If f(6) = 1.4 and f(8) = 1.7, then evaluate $\displaystyle \log_{3} 35 $ and $\displaystyle \log_{3} (7/5) $

b. Find t such that f(t +2) + f(t + 4) = 1

2. Give an example of a logarithmic function g, which has a vertical asymptote x = –2, and passes through the origin.