Sending this a second time, (if you have anything other than an answer I will report)

a

Step-by-step explanation:

Move 6 to the right by subtracting 6 to both sides of <

7x<4x+18

Now move 4x to the left by subtracting 4x to both sides of <

3x<18

Now divide 3 by both sides of < to solve for x

x<6

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.