I uploaded the answer to a file hosting. Here's link:
tinyurl.com/wtjfavyw
Ok,
f(0.35)= 7f/20
f(-5.2)=-26f/5
f(10)= 10f
f(-0.5)= -f/2
as for the last question I am not quite sure, sorry....hope I helped a little :)
I’m saying (x+2) if you factor the denominators
