Answer:

Step-by-step explanation:
From inspection of the graph, the given points are:
If we draw a line through the given points, the line is a curve rather than a straight line. If the line was a straight line, the graph would be modeled as an arithmetic sequence. Therefore, as the line is a curve, the given points are modeling a geometric sequence.
<u>General form</u> of a geometric sequence:

where:
- a is the first term
- r is the common ratio
is the nth term
Rewrite the given points as terms of the sequence:
- (2, 9) ⇒ a₂ = 9
- (3, 3) ⇒ a₃ = 3
- (4, 1) ⇒ a₄ = 1
To find the common ratio r, divide consecutive terms:

Calculate the first term (a) by substituting the found value of r and the given values of one of the terms into the formula:




Substitute the found values of r and a into the general formula to create the sequence modeled by the graph:

Learn more about geometric sequences here:
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Answer:
<em>y = (x - 4) - 4 </em>
Step-by-step explanation:
m =
(- 2, - 10)
(4 , - 4)
m =
= 1
y + 4 = (x - 4) ⇒ <em>y = (x - 4) - 4</em>
Arranging them in ascending order :
21 , 21 , 30 , 44, 49, 52
Median = (30 + 44) ÷ 2
Median = 37 mins
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Answer: Median = 37 mins (Answer D)
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Answer:
-20n^2-39n-15
Step-by-step explanation: