The classes at the middle school want to raise money.

the sixth grade runs a bake sale for
5
5
hours and makes
$170
$170
.
the seventh grade sets up a dunking booth for
4
4
hours and makes
$112
$112
.
the eighth grade has a car wash and makes
$192
$192
in
6
6
hours.

which class has the highest rate for raising money?

step-by-step explanation:

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answer is : muchas/tipicas

have a nice day!

~recklesschicken

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)

let's fu(!

step-by-step explanation: