Consider the following function. (If an answer does not exist, enter DNE.) f(x) = x^2+7x-4 divided by x^2.

a) Find the vertical and horizontal asymptote(s).

b) Find the intervals where the function is increasing and decreasing. (Enter your answer using interval notation.)

c) Find the local maximum and minimum values.

d) Find the interval where the function is concave up and concave down. (Enter your answer using interval notation.)

e) Find the inflection points