Solve the system of linear equations using linear combination. 3a + 6b = 45 2a – 2b = –12 which is the solution to the system? (-2,-5) (-1,-7) (1,7) (2,5)

i think 1: 2

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.