Answer:
Fourth option is the correct answer
[tex] (f - g)(x) = 3 {x}^{2} + 6x - 3[/tex]
Step-by-step explanation:
[tex]f(x) = 3{x}^{2} + 7x \\ g(x) = x + 3 \\ \\ (f - g)(x) = f(x) - g(x) \\ = 3{x}^{2} + 7x - (x + 3) \\ = 3{x}^{2} + 7x - x - 3 \\ \purple{ \bold{ (f - g)(x) = 3 {x}^{2} + 6x - 3 }}[/tex]
