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Dafna1 [17]
4 years ago
3

The graph represents the data cost for monthly Internet service for a cell phone.

Mathematics
2 answers:
Sveta_85 [38]4 years ago
8 0

Answer:

C(x) = 15            0 ≤ x ≤ 2

C(x) = 5x + 10    2 < x ≤ 6

C(x) = 50           x > 6

Step-by-step explanation:

Let's define

  • x: Gigabytes Used
  • C(x): Monthly Cost in dollars

The graph has three parts. In the first part, the cost has a constant value of 15. The closed circles indicate that endpoints (at 0 and 2) are included in this segment.

In the second part, a line (which pass through (2, 20) and (6,40)) is shown. Its parameters are:

slope = (40 - 20)/(6-2) = 5

y-intercept: 20 = 5*2 + b <=> b = 20 - 5*2 =  10

Therefore, the equation of the line is: y = 5x + 10

The open circle at the beginning of the line indicates that it is not present in the segment. The closed circle at the end of the line indicates that it is present in the segment.

In the third part, the cost has a constant value of 50. The open circle indicates that the endpoint (6,50) is not included in this segment.

den301095 [7]4 years ago
7 0

Answer:

In the third part, the cost has a constant value of 50. The open circle indicates that the endpoint (6,50) is not included in this segment.

Step-by-step explanation:

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Answer:


Step-by-step explanation:

The best way to do this is to let a graphing program do it. You could do it from a chart, but a graphing program can be useful for that as well. We'll make up a mini chart here

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-3      (-3)^2 + 2(-3) + 3 =       6

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1        (1)^2 + 2(1) + 3              6

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See the graph below.    

You can pick it out from the graphs you were given.                

8 0
4 years ago
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arsen [322]

(Since there are no options to chose from, I guess I'll just do my own answer and you'll have to pick the closest one to this one. Or, you could comment the options and I could help you there too.)

Answer:

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Step-by-step explanation:

Since there is an equal number of each color of marble, the outcomes of the event are equally likely. If there were more of one marble, it would be unlikely.

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Have a great day!! ;p

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