need rnnnn

Question 1
Simplify: 9log9(4) =?
A. 3
B. 4
C. 9
D. 81
Question 2
Simplify: 3log3(-5) =?
A. -5
B. 3
C. 9
D. undefined
Question 3
If f(x) = -2x2 + 8x - 4, which of the following is true?
A. The maximum value of f(x) is - 4.
B. The graph of f opens upward.
C. The graph of f has no x-intercept
D. f is not a one to one function.​