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3 years ago

8

You purchase a cell phone for $125. the value of the cell phone decreases by about 20% annually. write a function at models the

value of the cell phone overtime. then find the value of the cell phone after three years

1 answer:

djverab [1.8K]3 years ago

5 0

F(x)=125-(125*0.2x)
to find the value of the phone after 3 years, you put x=3.
f(3)=125-(125*0.2(3))
f(3)=50

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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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