Please answer the questions below ASAP, make sure they are right as well. I will highly consider giving you thumbs up

Questions:

Question 6 (1 point) If f (x) = In (x) - 3x, then the second derivative of f(x) is ( a) O b) = O c z O d) =2 O e) None of the above Question 7 (1 point) On which of the following intervals is the graph of f(x) = In(x) - 5x, always concave down? Note: The domain of f(x) is {x | x > O} O a) (3, co) b) (-00, 00) O c) (-00, 0) O d) (0, 00) O e) None of the above