Question

Solve, assuming a linear equation fits the situation.

The value of a graphing calculator is $225. After 2 years, the value of this calculator is $160. Find the value of the calculator after 5 years.

(HINT: Let the time now be 0, the time in two years be 2, and the time in five years be 5.)

Answer 1

to get the linear equation we have to get the slope and the starting y value (whats it called in english?)
starting y is obviously 225
slope is (160-225)/2 = -32.5

so the equation would be:
f(x)=-32.5x+225
with x being years and f(x) being the value after x years.

so after 5 years its value would be:
f(5)=-32.5*5+225=62.5

so its value after 5 years would be 62.5$

Answer 2

62.5 is rong ... i typed it in and it said it was rong

Answer 3

62.5 is rong ...i typed it on and it said it was rong

Answer 4

Try typing in 162.5.

Answer 5

call me over delaine i'm bored.

Answer 6

are you sure?
in 2 years it lost $225-$160=$65 value.
so in 1 year it loses $65/2 = $32.5 (assuming a linear equation).
so in 5 years it loses $32.5*5=$162.5.
so after 5 years it has $225-$162.5=$62.5

Answer 7

Make x the price of the calculator at year 0
x=225
Year 2 equation. Y represents the year
x=160+2y
Solve simultanoeusly
225-160+2y=0
62=2y
32.5*5= 162.5.......
Yeah the answer should be $62.5