corajohnson428 corajohnson428 11-11-2022 Mathematics contestada 3.4.3 Quiz: Adding and Subtracting Functions Question 7 of 10 If f(x) = 2x² + 1 and g(x)=x2-7, find (f+ g)(x). OA. x² +8 B. 3x² - 6 C. x² - 6 D. 3x² +8