Answer:
Step-by-step explanation:
Lack of information
Answer:
dfdff3ffdcdcdcd
Step-by-step explanation:
ccdcdcc
<h3>
Answer: Choice B</h3>
The set notation includes all values from -5 to 0, but the domain only includes the integer values
eg: something like -1.2 is in the second set, but it is not in the set {-5,-4,-3,-2,-1}
==========================================================
Further explanation:
Let's go through the answer choices one by one
- A. This is false because 0 does not come before -5, but instead -5 is listed first. The order -5,-4,-3,-2,-1,0 is correct meaning that is the correct order as well.
- B. This is true. A value like x = -1.2 is in the set since -1.2 is between -5 and 0; but -1.2 is not in the set {-5, -4, -3, -2, -1, 0}. So the distinction is that we're either considering integers only or all real numbers in this interval. To ensure that we only look at integers, the student would have to write . The portion means "x is in the set of integers". The Z refers to the German word Zahlen, which translates to "numbers".
- C. This is false. The student used the correct inequality signs to indicate x is -5 or larger and also 0 or smaller; basically x is between -5 and 0 inclusive of both endpoints. The "or equal to" portions indicate we are keeping the endpoints and not excluding them.
- D. This is false. Writing would not make any sense. This is because that compound inequality breaks down into . Try to think of a number that is both smaller than -5 AND also larger than 0. It can't be done. No such number exists.
Y = 1 3 -x = left[y \right] = \left[ 3-x\right][y]=[3−x]
For this case we have a function of the form , where
We must find the value of the function when , that is, we must find f (3). So:
So
Answer: