6x+9y-12=0 ‎‎‎‎‎ ‎‎‎‎

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step-by-step explanation:

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i know the way

and

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"exterior angles = 360 / number of sides.

60 = 360 / sides

sides = 360 / 60

sides = 6"

since we know that the two functions are equal, f (x) = g

(x), therefore when we equate the two equations the result should be similar to

3x = x – 4:

a. f(x) = 3x, g(x) = x – 4

equating the two functions:

3x = x – 4             (correct)

so we now got our answer (a)

$25 becasue a 10 increase would make it from 80 to 50