Question 8 of 10
f(x)=√x + 9. Find f¹(x) and its domain.
○ A. ƒ˜¹ (x) = x² – 9; x ≥ 0
O B. f¹(x) = (x - 9)²; x ≥ 0
O c. f¹(x) = x² - 9; x≥ 9
○ D. ƒ¯¹ (x) = (x − 9)²; x≥ 9