report nonsense

Question 11
If f(x) = -ex - 2, then the range of f is given by the interval
A. (-∞ , -2)
B. (-∞ , +∞)
C. (-2; , +∞)
D. (-∞ , +2)
Question 12
If f(x) = √(x - 1) / (x2 - 9), then the domain of f is given by the interval
A. (1 , +∞)
B. (-3 , +3)
C. [1 , 3)U(3 , +∞)
D. (-3 , 3)U(3 , +∞)
Question 13
The number of points of intersections of the graphs of y = 2x and y = -x2 + 2 is equal to
A. 0
B. 1
C. 2
D. 3
Question 14
If f(x) = ln(x + 1) - 2, then f-1(x) =
A. ex + 1 - 2
B. ex - 2
C. ex + 2 - 2
D. ex + 2 - 1
Question 15
For all x real, √(x2 -4x + 4) =
A. x - 2
B. x + 2x + 2
C. |x - 2|
D. x + 2​