Combine like terms to simplify the expression: 9 + 3b − 1 + 7b − 2 =

16b

9 − 10b

6 + 10b

9 + 10b

8 + 10b

please help

cosine

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.

25.3

step-by-step explanation:

1st step

add 3+6

=9

multipy 9*3

=37