The number of people contacted at each level of a phone tree can be represented by f(x) = 3x, where x represents the level. what is x when f(x) = 27?

x = 9

Step-by-step explanation:

given f(x) = 3x and f(x) = 27, then equating f(x) gives

3x = 27 ( divide both sides by 3 )

x = 9

1: -2 3/4, -2 1/2, -14, 0, 3, 8 1/3

2: -4, -3, -2 1/2, -2 1/4, 3 1/4,

step-by-step explanation:

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.