The following equation represents the number of fish in a pond, F(x), after x number of weeks. F(x) = 500 (1.2)x. At what rate is the fish population increasing or decreasing? O increasing at a rate of 1.2 fish each week.
O decreasing at a rate of 20% each week.
O e. increasing at a rate of 1.2% each week
O decreasing at a rate of 1.2 fish each week.
increasing at a rate of 20% each week.

hello from mrbilldoesmath!

answer:   (7x + 6y) ( 49x^2 - 42xy + 36y^2)

discussion:

in general, the factorization of a^3 + b^3 is

a^3 + b^ 3 = (a + b) ( a^2 - ab + b^2)

in our case note that 343 = 7^3 and 216 = 6^3 so the equation becomes:

343x^3 + 216y^3 = (7x)^3 + (6y)^3

if you think of a (above) as 7x and b as 6y the factorization becomes

343x^3 + 216y^3 =

((7x + 6y) (   (7x)^2 - 7x*6y + (6y)^2)   =

(7x + 6y) ( 49x^2 - 42xy + 36y^2)

you,

mrb

(a + b) (a^2 - a b + b^2)

107.141592654

step-by-step explanation:

what is the approximate solution for the system of equations x+5y=10 and 3x+y=1

step-by-step explanation:

tell me the answer first then i will answer it