Write a ratio for the model that compares the symbols ☺ to ☼. Simplify if possible. ☺☺☺☺☺ ☺☺☺☺☺ ☺☺☺☺☺

☼☼☼☼☼

3:1

Step-by-step explanation:

There are 15 smiley faces & 5 stars so you just have to simplify them.

$3,200 x 7.25% = $3,200 x .0725 = $232 interest monthly

$232 monthly x 12 annual = $2, 784

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