Question

Check! If I'm wrong, do not tell me the answer.
What is the difference of j and k?
j(x) = x – 14 k(x) = 7 + x

(j – k)(x) = –21 <---
(j – k)(x) = –21 + 2x
(j – k)(x) = –7
(j – k)(x) = –7 + 2x

Answer 1

Difference means to subtract. So subtract function f and k together.
(x – 14)- (7 + x)
x-14-7-x=-21
the xs will cancel out

Answer 2

so you are correct :)