Suppose a city with population 100,000 has been growing at a rate of 2% per year. If this rate continues, find the population of this city in 22 years.

154,598

Step-by-step explanation:

You can show the growth in the following equation

100,000(1.02)^n

where n is the number of years

To find the population in 22 years you just plug in 22 for n

100,000(1.02)^22

154597.9671

Which rounds to 154598

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)