Wesley carves whistles out of wood and sells them at a gift shop. The equation C = 2n+15 models his weekly cost C of making n whistles. The equation R = 5n models his
weekly revenue R from selling n whistles. How many whistles must Wesley make and sell
for his cost and revenue to be equal?

hbfhv.hjgfskhgfdbmx n

step-by-step explanation:

9-15%

central angle of a triangle has the same measure as its intercepted arc.

step-by-step explanation:

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