Only the last two options are true.
The first one is false, because 4.5 is the value of the maximum of f(x), not the point where it is reached.
The second one is false, because g(x) has a maximum of 9, so it is a downward-facing parabola (just like f(x)), so it doesn't have a minimum.
The third one is true, because the maximum value of f(x) is 4.5, and the maximum value of g(x) is 9, which is twice the maximum of f(x)
The last one is false (see point 2).
Answer:
c
Step-by-step explanation:
get a common denominator which is 12
2 1/3 = 2 4 /12
5 3/4 = 5 9 /12
2 4/12 + 5 9/12 = 7 13/12
7 + 1 1/12
8 1/12
