1) Write a recursive formula for: 150, 143, 136, 129, 122, 115, ... a
2) Write an explicit formula for a sequence where a = 8 and the common difference is 6.
3) Kristine has a car that cost $23,000 when she bought it. It decreases in value by $3,000 every year.
Write an explicit formula for this situation.
4) Rebecca is writing a book. On day three she has written 36 pages and doubles the amount she
writes every day. Write an explicit formula for this situation.
helppp please !! :)

it could 14.28 but if its not that one then it has to be the 17 one. hope this ! : )

step-by-step explanation:

step-by-step explanation:

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)

16 is the coefficient

hope this