Answered

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4) Astronomers have notice that the number of visible sunspots varies from a
minimum of about 10 to a maximum of about 110 per year. Further, this
variation is sinusoidal, repeating over an 11 year period. If the last maximum
occurred in 2003, write the cosine function, n(t), which models this
phenomenon in terms of the time, t, which represents the year.

Sagot :

Answer:

Choice D is correct

Step-by-step explanation:

trust me, brainliest pls?

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