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x > 6

Step-by-step explanation:

Thanks to the definition of mean, we can write this inequality:

(4.5 + 5.7 + 5.2 + 4.2 + 4.4 + x)/6 > 5

(24 + x)/6 > 5

24+ x > 30

x > 6

fourth month

step-by-step explanation:

it is the one with the most keychains.

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.