33 folders cost \$2.91$2.91dollar sign, 2, point, 91. Which equation would help determine the cost of 222 folders? Choose 1 Choose 1 (Choice A) A \dfrac{2}{\$2.91} = \dfrac{x}{3} $2.91 2 = 3 x start fraction, 2, divided by, dollar sign, 2, point, 91, end fraction, equals, start fraction, x, divided by, 3, end fraction (Choice B) B \dfrac{2}{x} = \dfrac{3}{\$2.91} x 2 = $2.91 3 start fraction, 2, divided by, x, end fraction, equals, start fraction, 3, divided by, dollar sign, 2, point, 91, end fraction (Choice C) C \dfrac{x}{2} = \dfrac{3}{\$2.91} 2 x = $2.91 3 start fraction, x, divided by, 2, end fraction, equals, start fraction, 3, divided by, dollar sign, 2, point, 91, end fraction (Choice D) D \dfrac{2}{x} = \dfrac{\$2.91}{3} x 2 = 3 $2.91 start fraction, 2, divided by, x, end fraction, equals, start fraction, dollar sign, 2, point, 91, divided by, 3, end fraction (Choice E) E None of the above

hello from mrbilldoesmath!

answer:

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

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

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

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb

no oblique asymptote

step-by-step explanation:

to find the oblique asymptote of f(x)

here numerator has degree 1 and denomintor degree 2

degree of numerator < degree of denominator

hence there is no oblique asymptote

when the degree of the denominator > that of the numerator, we saw that the value in the denominator got so much bigger, so quickly,   giving us a horizontal asymptote of the x-axis. or we can write

f(x) = a polynomial of x + a proper fraction.

in this case only we have oblique asymptotes but not when numerator has less degree.

it's a proportional graph.

step-by-step explanation:

8 x 5 = 40         (and you have -8x and -5y)

x= absiss

y= orderly

so you have a proportional graph.

the answer is  

c.

90.0π cm^2

hope you got it.