Question

Given f(x)=7x+3 and g(x)=9x , what is g(x)-f(x) ?
2x-3
-2x-3
-2x+3
2x+3

Answer 1

the answer is -2x+3
g(x)-f(x)
9x-7x+3
-2x+3

Answer 2

f(x)=7x+3 and g(x)=9x , what is g(x)-f(x) ?

g(x)-f(x) = 9x - (7x+3)
g(x)-f(x) = 9x - 7x - 3
g(x)-f(x) = 2x - 3

answer is 2x-3 (first choice)