Problem #8 is confusing to me, can you help me please ?

Problem (8) (17 points) Given f(x) = 5, answer the following questions: (a) lim f(x) =? (b) lim f (x) =? (c) lim f (r) =? (d) lim f(x) =? (e) lim f(x) =? (f) lim f(x) =? (g) lim f(a) =? (h) lim f(x) =? (i) lim f(x) =? (j) lim f(r) =? (k) lim f(x) =? of function f() = 5, and SHOW that the absolute value function