Smart phone was originally $790 its loses its value at a rate of 175 per year identify the variables. write equation in y=mx+b form to to represent the value of the phone. use the equation above to find the value of the phone after four years

use formula for the circle a=3.14

step-by-step explanation:

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb

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step-by-step explanation:

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