Answer:
2 3/4
Step-by-step explanation:
I think is the right answer hope it helps
Option D is correct. The correct statement that represents the graph is R: {y E R | y ≥ -3}
From the given graph, we are to get the range.
The range is the output value for which the function of the graph exists. The required output values are the y-values.
From the graph shown, we can see that the range of y is from -3 to 1. This can be denoted as;
Range = [-3, 1)
This shows that the range of the graph are all the values greater than -3 including -3.
The correct statement will therefore be;
R: {y E R | y ≥ -3}
Learn more about range here: brainly.com/question/17611901
Answer: 0.2857
<u>Step-by-step explanation:</u>
At least one teacher means exactly 1 or exactly 2 or exactly 3 teachers. Find the probability of each and add them up.

One teacher + Two teachers + Three teachers = 0.2857