Given the system of equations. Which of the options represents the resulting equation after an equivalent expression for y is substituted into the second equation.
-4x+y=3
2x-y=12

a.2x - (4 x + 3) = 12
b.-4(4 y + ) + y = 3
c.2 (4 x + 3) - y
d.-4 x + 4 x - 3 = 3

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.

im pretty sure its

(8,15)

step-by-step explanation:

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb

a

step-by-step explanation:

its wrong