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The graph shows a function that models the value V (in millions of dollars) of a stock portfolio as a function of time t (in months) over an 18-month period.

The graph shows a function that models the value V in millions of dollars of a stock portfolio as a function of time t in months over an 18month period class=

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(a)

[tex]0\leq t\leq 4[/tex]

we can see that

curve is moving upward from t=0 to t=4

so, this is increasing interval.........Answer

(b)

[tex]15\leq t\leq 18[/tex]

we can see that

curve is moving upward from t=15 to t=18

so, this is increasing interval.........Answer

(c)

[tex]4\leq t\leq 15[/tex]

we can see that

curve is moving downward from t=4 to t=15

so, this is decreasing interval.........Answer


Fastrace18

Answer:

:)

Step-by-step explanation:

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