R(m) models the average monthly rainfall (in millimeters) in Tanzania for the years 1900-2009 as a function of the month number m.

Month# Rainfall(millimeters)

1 | 145

2 | 135.9

3 | 179.1

4 | 171

5 | 64.8

6 | 12.6

7 | 8.4

8 | 8.9

9 | 15.7

10 | 29.5

11 | 83.8

12 | 142.6

whats the appropriate domain?

A) 8.4≤m≤179.1

B)1900≤m≤2009

C)1≤m≤12

D)0≤m≤179.1

Step-by-step explanation:

Notice that the function relates time with millimeters, specifically, the relation is about the number of millimeters of rainfall falls monthly.

In this case, the domain is the data set for months, because it's the independent variable. In other words, the average rainfall depends on time.

Also, negative value for months won't make sense, because there can't be -2 months.

Therefore, the proper domain is 1 ≤m ≤12, because the minimum of months is 1, and the maximum is 12, acording to our calendar.

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step-by-step explanation:

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