Write -9 < x less-than-or-equal-to 5 using interval notation.
A. (-9,5]
B. (-9,5)
C. [-9,5)
D. [-9,5]
Use the graph to answer the question.
What is the domain of the function represented by the graph?
[-1, infinite sign)
[-0.7,3.7]
[-1/4, infinite sign)
(-infinite sign, infinite sign)
Use the graph to answer the question.
What is the range of the function represented by the graph?
[-1, infinite sign)
[-0.7, 3.7]
[-1/4, infinite sign)
(-infinite sign, infinite sign)
given that f(x)=x^2-3x, find f(-4)
-4
4
-28
28
A. (-9,5]
The answer to the first question is A. (-9,5]. This notation indicates that x is greater than -9 and less than or equal to 5.
The domain of the function represented by the graph is (-infinite sign, infinite sign). This means that the function is defined for all real numbers.
The range of the function represented by the graph is [-1/4, infinite sign). This means that the function can have any value greater than or equal to -1/4.
To find f(-4) when f(x) = x^2 - 3x, substitute -4 into the function:
f(-4) = (-4)^2 - 3(-4)
f(-4) = 16 + 12
f(-4) = 28
Therefore, the answer is 28.